EBC ELECTRONICS

Solved Problems

Sonographe SD-22 Compact disc player (By Conrad Johnson Design)
Disc drawer will not open. Can hear power to it.
Denon AVR 2808 CI # 8021524656 Repair Service
Lightning event: HDMI OUT to TV not working
46 Sharp Aquos TV Repair Service
The Comcast remote stopped turning the TV on/off and controlling the volume, although the remote still changes the cable stations. I changed remote batteries & reprogrammed but it didn't help. The Sharp remote also doesn't work.
Adcom GFA-7500 #DH162995 ? 1 single channel
The unit blew the main fuse. I tracked it down to this single channel. The other 4 channels are working fine. If this channel is plugged into the transformer, the main 15A fuse blows. There are no visible signs of distress on the board or any components. I know your web site shows you are not accepting new repairs, but I emailed, and this was the answer: Hello Chris, We can repair it. Please complete online form via link below and ship the board http://www.ebcelectronics.com/rsr.php It is 120 plus shipping. Do not separate from heatsink, ship whole module. Best regards, Paul EBC Electronics. Thank you, Chris
adcom gtp 870 hd #pr870dcs0376 Estimate-Based Repair Service
hdmi board is not working if you could check the whole unit out to be sure it is working would be great thank you
Logitech Z5500 amplifier(2) with the control module
I have a Logitech Z5500 amplifier with the control module that I would to get repaired. I have two of them that were damaged as a result of a storm. I have included a control module so you can turn on and off the amplifier. Please check each amplifier. one unit turns on and makes a loud hum in several of the speakers and sub, while the other one is completely dead. Please evaluate both and provide a cost estimate for repair.
ROTEL RSX-1057 #101-6281061
Unit will not power on/operate.
(1) Defenitive Technology BP2004 and (2) O-LFO22
no sound no power
(1) Sunfire TSS amp (2) Velodyne CT100 amps
Sunfire True Subwoofer Signature amp ser. 98031000176- volume pot is bad, maybe more... Small Velodyne CT-100 amp ser. 59174583- bought recently on ebay. DOA....no sound. Was listed as working. Large Velodyne CT-100 amp ser. 59229766- was working fine, was using line in and out to main amp for right front spkr...one night it started humming louder and louder. Equipment is upstairs so time it took to figure out what was going on, it was too late after powerdown. All I can figure is that there might have been too much from marantz avp7702 pre-out in bass setting in tone control. Not sure if that is even possible though as left front has same setup with another CT-100 and its fine. Maybe it was just time for a failure. Please advise on that. Return shipping label inside box. 15% discount per unit per our email discussion.
(1)Velodyne HGS10BGII Serial # 62144007 (2)Velodyne HGS10BGII Serial # 62144009
One has a humming sound,popping and crackling. Other one has very loud popping and crackling sounds as well.
(2) 450MCX 12599080042 and 126 990 80042
Bias off,recapped,and power cord replaced on both if not original at 10 ft long,if those are factory power cords only one need be replaced that has a cut in the insulation near the back of the amp
(3) units Sunfire HRS-10
All three units humming
(Brand) REL Acoustics (Model#) R-328 (Serial#) R-30301312 w 1Y warranty
Will not turn ON, i checked the fuse on the fuse compartment, replaced the fuse with same rating fuse but still when you turn the ON switch nothing happens? Do you repair this model REL Acoustics R-328 Amplifier Plate? I YES i would like to have my REL R-328 Amplifier Plate serviced and/or repaired. Please kindly advise as to shall i do next? Thanks.
0073305266 Estimate-Based Repair Service
When the unit is turned on, it goes into shutdown within a few seconds.
1 HRS12 AMPLIFIER SN: HRS12 A07-12170149 HUMS1 HRS10 AMPLIFIER SN: HRS10 D07 15460114 DEAD1 HRS12 AMPLIFIER SN: HRS12 A07 12170143 HUMS
1 HRS12 AMPLIFIER SN: HRS12 A07-12170149 HUMS 1 HRS10 AMPLIFIER SN: HRS10 D07 15460114 DEAD 1 HRS12 AMPLIFIER SN: HRS12 A07 12170143 HUMS
1-468-721-11 Power Supply Board Repair Service
Dead Board
1-468-721-11 Power Supply Board Repair Service
There was a loud pop sound and the TV picture went out. The sound still works. IC 13 bad, C25 burnt, R356-359 burnt, Q6 bad, R352-355 burnt. There may be more but I am not sure since I dont have a schemadic and cant follow it back any further.
1-468-721-11 Power Supply Board Repair Service
Popped and went out
1-468-721-11 Power Supply Board Repair Service
Of the two power supplies I sent you, the original one made a loud bang and tv went dead. The other one works, but has a green tint in the left top corner of the picture,(?)it works better on some channels but is usually very grainy during commercials(?)As per our agreement, please fix the best one(?) and send back one to me for $50.00. Thank you!
1-468-721-11 Power Supply Board Repair Service
tv doesnt turn on!
1-468-721-11 Power Supply Board Repair Service
As describe above
1-468-721-11 Power Supply Board Repair Service
Unit comes on with sound for a few seconds, than nothing. I think my board says 1-468-721-1, not 11?
1. Velodyne FSR18BV #592290052. Velodyne FSR 18BV #59007017
1. Dead, just stopped working 2. Loud pop initially , now will power on work for brief time—- a minute or two then starts with a very loud humming sound. Both of these amps are replacement amps from Velodyne back when they use to make them,and once again they both essentially quit.
10" subwoofers in one housing. one active, the other passive?
Very faint signal. The beat of the music is present.
15" Velodyne Subwoofer Model FSR15BV Serial # 60159032 Date June 7, 2000
It went dead. I checked the fuse and it was blown. Put another same value fuse. Turned on with no audio input connected and heard short hum sound for about 1 second and that fuse was blown. I did not try another fuse. The condition of speaker cone is in perfect condition. If you can service this unit I would only want to send the amplifier module for repair. Thanks, Larry Jones
2 Adcom GFA-565 Repair Services
Hello, I will be shipping 2 GFA-565s to be serviced so I\'m assuming I should just double the price stated. They both have the leaky capacitors on the input boards & both had the distortion light on when powered up. I brought them to a local repair shop & explained the problem that these amps have but they were not able to repair. They may have replaced the caps on one or both but not sure if the boards were cleaned properly. I would rather have them replaced with the caps that you use on both anyway so that all of the parts are the same on both amps. One amp (serial ending with 583) has the wires to the input board spliced from removing it, if you could also fix that as well. On the same amp the wires to the LED lights on the front panel have been unplugged. I\'m not sure if anything was done to the other amp but they are both in nice cosmetic condition & should be worth fixing. Call me if you have any questions. Thank you, Jim. 941-627-6735
2 - Hafler DH500 amps #5001 #NA
Would like them "fixed up" new fans maybe, but problems were oft times click out on small loads. Clean, fix what needs fixing, want to keep as original as possible, they are a great amp... Would like to look into 'bridging' also.
2 Adcom GFA 565 Amps Repair Service
original boxes 004212795, and 007213321
2 Adcom GFA-565 Repair Services
TWO (2) units need repair: Serial numbers 007213885 and 007213888. Both have been in storage many years and now show high DC voltage at output terminals. They have a past history of blown 10-Ohm fusible resistors and Adcom #2A IC in the DC nulling circuitry. To the point where IC sockets were mounted on the boards! This was before we were aware of the leaking cap situation. You will note acoustical damping materila on the inside lid and heatsink fins. No other mods have been made.
2 amplifiers for Velodyne Minivee Subwoofer
This order is for repair of "2" velodyne MIniVee subwoofer amps which have the same issue in that when connected they produce a static sound instead of bass. I will need the repairs billed separately as the amp marked " E amp" was purchased from ebay and found to have the same issue as my previous subwoofer. Fortunately the seller was agreed to pay for repairs but I need to submit a repair invoice for cost and shipping.
2 crosovers NS-690
caps upgrade
2 Elf L10 tvs, Serial Numbers 51233957 and 50913928
TV 51233957 comes on but won't pick up signals TV 50913928 has sound but no picture
2 GFA-565 Repair Service
Ser ## 951212066 and 004-212249 at least one amp pops on shut down - and maybe start up? One does not produce sound at the speaker.
2 GFA-565 Repair Services
>one 565 works and the other has a slight > humm. the 565 was repaired from a so called electronic > speciality store. they were pathetic . i want it done perfectly without > scratches. please get in touch with me at 954.292.1600 i will fed exem to > you. > Andrew D.
2 GFA-565 spkr dc prot pcb installation
2 of GFA-565 speaker protection circuit installation
2 main pcb for PDI-P20LCDC Repair Service
First board - No Video
Second board - video jumps
2 of Adcom GFA-565 Repair Service
POPPING SOUND WHEN UNITS ARE TURNED OFF AT PRE-AMP.HUM IN SPEAKERS.I HAVE (2) AMPS IN NEED OF REPAIR.
Tracking #'s: 1Z8V8Y840396177663 & 1Z8V8Y840396494678
Amp serial numbers: 004213146 & 004213172
2 of Adcom GFA-565 Repair Services
Sending in (2) Adcom GFA-565s both with damaged input boards. With fuses installed, there is sparking/arcs on the board of one of the units.
2 of Adcom GFA-565 Repair Services
I have two of these amps. One has no problems and runs cool. The problem amp always runs hot even after "repairs". It took about 1.5 years both times for the amp to begin to distort.
2 of GFA-565 Repair Services
DC
2 of GFA-565 Repair Services
DC
2 of Velodyne HGS12BJ and 1 Velodyne HGS10 Repair
Dead
2 pcs. Sunfire Eq-12 Amplifier module. serial nr. 07021041740. And L07091034864
Both have the same problem. No sound.
2 pcs. Sunfire Eq-12 Amplifier module. serial nr. 07021041740. And L07091034864
Both have the same problem. No sound.
2 Rectifier/ power supply
I have two rectiiers they are for supplying power for telecom equipment.
2 Signature Sunfire 12 inch subwoofers. 1 Signature Sunfire 10 inch subwoofer
Needs to be rebuilt for $140 each--as agreed Will ship all 3 in 1 box
2 Sunfire True Subwoofer MKII amp boards Ser# 90719667, 20718183
No audio output & or buzzing, no audio input sensing
2 Velodyne HGS 18 plate amplifier #59246011 and #622971104
cracking sound and noise
2 Velodyne HGS18BGII 6209300B and 62126063
I have 2 Velodyne HGS18BGII Subwoofer Amps that need repair. One didn't work at all and the other was very noisy and inconsistent. Amp 1 - Ser# 6209300B Amp 2 - Ser# 62126063
2011 Panasonic TC-P50ST30
Black screen. No sound no image and blinking power red error light. Okay to call between 12:45pm to 13:15pm or anytime after 5:30pm.
3 - L-10 Elf tv's by KTV Global Corp. Serial Numbers: 51233951, 50910623, 50912347
No power, No Sound, Wont change channels
3 Adcom GFA-585 repair services



3 of Cisco Catalyst 3500 internal power supply repairs
Dead
3 velodyne ampsDD+18EBG 703371008DD+10EBG 703201035DD+10EBG 703201036
Units don't power up or power on but no sound. All 3 packaged in the same box. Have not been tampered with at all. 1st time out of the cabinets.
300297855211 32FD9954 42FD9954 TV power supply board repair service
I was having the clicking and the not turning on problem.I did order the capacitors and did some moinor sodering (two capictors) but I could not make that work either. I am not a good electrician. I hooked up all 7 attachments to the power board afte taking it out and soldering the capactors,,,, nothing, no lights no clicking, no smoke, no nothing, it did have power to the board.
310432828901 power supply board repair service
I have a Philips 42PF9956 that seems to have a power supply problem, as it has just started smoking and two blue modules on the board appear to be overheating. the board is 310432828901.
37LG050
Infared not working TV will not turn on.
37MF331d/37 Power Supply Board Repair Service
TV will not power up green blinking light. Power board has 1 capacitor that is puffed up on top.
37MF331d/37 Power Supply Board Repair Service
when you try to turn tv on the green led flashes, if you try for a while sometimes it will turn on.other times it wont
4 Adcom GFA-565 repair services
2 amps for repair - dead
2 amps for service/repair

402VLZ4 Mackie
broken power socket
42FD9954 32FD9954 Philips plasma TV repair service/ Corrected: 42FD9954 power supply board repair service.
Classic red light, slow to turn on then not turning on.
42FD9954 plasma TV repair service
Protection- blinking red light
42FD9954 plasma TV repair service
Protection- blinking red light
42FD9954 power supply
Defective standby and p25v section
42FD9954 Power Supply Board Repair
When room temp is 73f wil click 4 to 5 clicks and then works. and when room temp below 70 red light flashes and goes out, and will come back when room temp rise and then will work with few clicks. I have opend the tv back panel and I could remove the power panel very easyly to mail it to you.
42FD9954 power supply repair service
When i turn the TV on, the light is red. then i turn it on with th remote control, the light becomes green and then have a couple clicking from some relays and then another one and the light is flashing red. i did try to replace the IC but the problem persisted. I don't know where to go from there. Let me know what happens with your tests.
42FD9954 power supply repair service + service call
Blinking red LED- protection mode.
42FD9954 Sustain Board Repair Service
The TV is 'better', before it wouldn't even stay in standby mode. Now it at least has a red light when it is plugged in. As we discussed, when I turn it on with the remote, the light goes green and after about six or seven seconds, there are two relay clicks and it powers down. The red light flashes quickly, continuously. As you stated, I double checked all the connections and reseated each, including the itty bitty ribbon cable. I shipped both sustain boards to you about an hour ago via UPS. Hopefully, that will be it! The tracking number is 1Z6E97A10374740456. Let me know what I will owe you and I'll go back to your website and take care of it.
42PF7320 power supply
My TV is turning off after 5 minutes or so...It makes clicking & popping noises with picture break up before cutting out....It then clicks on and off continuely with no picture & then a red light started flasing....It would not turn back on from this point without unplugging the TV from the wall....The same cycle would then start all over again... Thanks, Jeff
42PF9431D/37 power supply board repair service
Green light goes off, red light flashes seven times
450MCX 12599080042 and 126 990 80042
Bias off,recapped,and power cord replaced on both if not original at 10 ft long,if those are factory power cords only one need be replaced that has a cut in the insulation near the back of the amp
47pf15422d/37 ADPF24350R1P power supply board Repair Service
Blows fuse
47pf15422d/37 ADPF24350R1P power supply board Repair Service
TV suddenly went off-no picture or sound. Audible chirping will not power on
47pf15422d/37 ADPF24350R1P power supply board Repair Service
sorry had to re dow every thing power supply quit working thats what they said at the shop. tried to fix it changed a cappassider i think the sodder dint take got the stand by blinken now and herd speaker come on thats it. the magnet broke around the transformer glued it to getter it might need replaced man i mis my tv thank you
47pf15422d/37 ADPF24350R1P power supply board Repair Service
Tv won\'t turn on.
47pf15422d/37 ADPF24350R1P power supply board Repair Service
Power supply from Magnavox 47MF437B. No picture or sound and was making a chirping sound from power supply. I touched the aluminum plate on top of supply and I got shocked! Also it looks like the transformer has solder that has got hot and melted. Thanks
47PFL5422d/37 ADPF24350R1P power supply board Repair Service
C955 WAS BULGED, REPLACED STILL NG,REPLACED KIT CAPS & 3 ZENER DIODES , STILL CHIRPS
50 inch Samsung Plasma TV HP-T5054 B3383CNP405844X
No sound
50FP9431D/37 Repair Service
TV will not power up. I unplugged it over nite and it still will not start up. The "Power On" led on the bottom front left corner of the tv flashes red 6 times. Any day/ time is fine for service.
50PF7321D power supply board Repair Service
The TV doesnt power on at all, no glowing light, no display, no sound, no crackling, nothing, neither using the remote nor manual power switch. Self diagnosed via web searches as power supply issue.
50PF9431D Power Supply Board Repair Service
TV powers up, goes black after a few seconds with blinking red light.
50PF9431D Power Supply Board Repair Service
Clicking Noise with red blinking light..No power.
544 wurlitzer amplifier
no sound
60 Mitsubishi DLP Repair Service
DLP engene
6871QYH027B LG 42V5 YSUS PCB BOARD ASSY
Sale12
7 Sunfire Subwoofer Plate Amplifiers Repair Service
Sunfire True Subwoofer Super Junior TSSJ8-D02-09451263 01102400631 03082405607 True Subwoofer Junior 00091403381 00121404017 True Subwoofer Architectural 00021600549 True Subwoofer Architectural Signature 00041700044 All are dead or hum a lot
86280-0w250
Lexus LS 430 factory mark Levinson Amp. All controls work. Screen shows volume increase but not a sound. Checked radio and amp fuses
86280-0w260
No sound out of the radio.
A7 Adam amplifier
Pink Noise
Accoustic Research AR1 Speaker Amp
Last Spring you fixed one of my subwoofer amps and now there is no power lighting up the power light in the other sub amp. It is nearly 20 years old, I assume that is the age these things start acting up?
Accuphase P-300 Power amplifier
Paul, Finally find the real problem of the P-300. It go to protection mode when the volume is turned up
Accuphase P-300 Power amplifier #DtU351
Have very large noise when power on. The power meter showing a large power output.
Acom GTP-600 Repair Service
Hello Warren, Usually there is no problem with adjustment but gtp-600s have problem with power supply and good idea to replace bridge rectifiers and capacitors in power supply module and inspect/resolder for soldering joints at main board. Total with power socket and other things will be about $120. Thanks, Paul.
Acoustic Research 1 tower speakers, serial # A 100504 L
Sub woofer not working. Neither color light comes on in the rear. Tried changing power cords but no change.
acoustic research ar 1-hi res speaker amplifier/ carver sunfire technology speaker amp.
as soon as power is turned on fuse blows . i replaced it once , thinking it was just a weak fuse. it immediately blew again , so unit was promptly unplugged
Acoustic Research AR 315 HO
The internal Carver Sunfire amplifier for the subwoofer just hums. It changes pitch by adjusting the gain.
Acoustic Research AR P315 HO A 0001019
Subwoofer doesn't work. Power light doesn't come on.
Acoustic Research AR1 High Output. Sunfire amp repair
The subwoofer amp lights up green with no signal (should be red with no signal), there is no turn-on thump, there is no output to woofer.
Acoustic Research AR1 sub woofer amp (Sunfire) S/N A100818R
Distorted low frequency sound. Thought it was the speaker (15") at first but it checked out OK.
Acoustic Research AR1, Sunfire Technology, Serial Number: A100034R
Dear Sir, I have a pair of Acoustic Research AR1 With Sunfire technology. On my left side speaker I have a sound issue distorsion like garglings which appears even with few volume on the woofer. I have made some diagnostic by myself to identify the origin of this issue and I think it comes from the amplifier, not the subwoofer it selves. Now I am investigating to repair this part and I found your website. I will be interested to know if you do this kind of repair and refresh the electronics of the amplifier of the AR1 ? Should I also send the amplifier of the Right Speaker (which is working) but for check to refresh electronic parts (like condenser) and change probable defects parts ? How do you suggest to proceed. Do I need to make more test in order to send the correct defect Items ? Whats about the costs and the delay ? For you information I am located in Switzerland, in Lausanne. Thanks for your returns. have a ice day. Best Regards Janos
Acoustic Research ARPR1212 S/N AAC0311000000246
Sub hums, runs fine just has a hum you can hear when nothing playing through it.
Acoustic Research Hi Res AR1 #B100453L
There is a rattle in the sub even at very low volume. When I hook up the woofer directly it sounds ok.
Acoustic Research Hi-Res AR1 Sunfire amplifier Estimate-Based Repair Service
Bought this unit used. Not sure if it works. Please test and repair if necessary. Thank you
Acoustic Research P315HO #A0001142
Distortion from the subwoofer. Swapped in a known good speaker, problem persists. Sending you the plate amp.
Acoustic Research Sunfire AR1 2 Amplifiers
I am sending in 2 of these amplifiers, service to cost $300+Shipping for both per email from Paul on 12/23/2015. One amp is causing a buzzing/humming in its woofer, while the other amp is producing distorted/garbled sound from its woofer.
Acoustic Research Sunfire AR1 Amplifier
The amp blows fuses as soon as I plug it in.
Acoustic Research Sunfire AR1 Amplifier
Humming sound from subwoofer when AMP is powered on. The subwoofer does not appear to work when music is being played or if it is working it is hard to tell due to the humming sound.
Acoustic Research Sunfire AR1 Amplifier
Indicate light is not no and No output sound came out from the woofer speaker.
Acoustic Research Sunfire AR1 Amplifier
BLOWING AC FUSE
Acoustic Research Sunfire AR1 Amplifier
Unit made a loud humming noise and lost audio.
Acoustic Research Sunfire AR1 Amplifier
For a long time the unit had small buzz when first turned on but would fade after several minutes. After that, it would distort very low frequencies on loud passages. This condition lasted for over a year and I did not bother with repair. Now there is a very loud hum when the amp is turned on that does not fade. In fact, it is so loud I am afraid to keep the switch turned on. The other speaker shows no signs of failure and so I've decided to send only this one in for repair.
Acoustic Research Sunfire AR1 Amplifier 2pcs
Neither one of the 15inch woofers on my AR1\'s will put out any sound. I am sending BOTH Sunfire Amps to you for Repair. I understand that the charge of $175 is for EACH one. Feel free to contact me by e-mail or phone. Thank you! Rich Catalano Serial Numbers: 2250100055 2250100089
Acoustic Research Sunfire AR1 Amplifier 2pcs
I've owned a pair of these speakers both with a 500w built-in powered subwoofer for over 17 years. Recently, within a month, both subwoofers no longer power on. I pulled both amps and replaced the faulty 250v/5amp fuse in both and immediately new fuses blew upon powering on. I believe age has worn down some of the outputs as the speakers have not otherwise been damaged. However, I did note some popping from the right subwoofer a week before it stopped powering on. Also, a few of the cylinders looking nodes on the panel look misshaped. Could you also inspect the components for any looming issues. Thank you. Respectfully, Jeremy
Acoustic Research Sunfire AR315 Amplifier
No subwoofer output. Input resistors on the subwoofer amp are visibly burned up, but no further investigation has been done.
Acoustic Research Sunfire AR315 Amplifier
No subwoofer output. Input resistors on the subwoofer amp are visibly burned up, but no further investigation has been done.
Acurus A100x3
Loud ground hum and static/crackling through one channel
Acurus A200x3
No real problems except transformer or main caps hum/noise. If main power caps were to be replaced, is it feasible to use 100v instead of the stock 85v? Right now looking for an estimated quote. If reasonable, I may send in my Acurus A200 also even though it is pretty dead quiet. Thanks, Bill Land
ACURUS DIA 100mkII
blown left channel
AD301M24 HAIER POWER SUPPLY Repair Service
No stby voltage,dead,... resoldered a few "ringed out" connections... no help..
AD301M24 HAIER POWER SUPPLY Repair Service
POWER JUST SHUT OFF AND WONT TURN BACK ON
AD301M24 HAIER POWER SUPPLY Repair Service
no power shorted fet
AD301M24 HAIER POWER SUPPLY Repair Service
48282 will not power up the unit.
AD301M24 HAIER POWER SUPPLY Repair Service
U4 keeps blowing up,power supply is dead
AD301M24 HAIER POWER SUPPLY Repair Service
turned tv on made a pop sound and then had a electronic smell. I took apart and One of the chips on power board is burned, maybe more?
AD301M24 HAIER POWER SUPPLY Repair Service
Dead. Not even any stand by 5 volts present. Some bulged electrolytic capacitors (1000 uf) have been replaced which did not fix problem)
AD301M24-4N1 and KAS200-5S241812XL power supply modules repair service
dead
AD301M24-4N1 power supply board Repair Service
Dead
Adam A7X
pow switch
Adcom 555 Estimate-Based Repair Service
distortion in bass frequencies
Adcom 565 SE serial # A565SEDBT0136
Left rail fuses blew out. replaced and blew again. from factory bad power switch, sometimes it fails to shut off. Paul, email invoice through paypal via my email address and my name...should pop right up and I will pay you in advance, so when done you can ship...thanks Andy
Adcom ACE 515 AC enhancer
The Amplifier power outlets tend to stay engaged and remain on when they should be turned off. The relay problem is intermittent but frequent enough to reproduce pretty easily. One outlet does not seem to be any more reliable than the other although I have never tested them at the same time to see if both outlets stick on at the same time. The have always turned on the outlets just not off. Accessory outlets appear to work fine and trigger with appropriate delay.
Adcom ACE 515 AC enhancer
Fails to power-down amplifiers outlet.
Adcom ACE 515 AC enhancer
Want gone through to ensure proper operation as I am having you service my GTA 555 Amp and my GTP 500 Receiver/Preamp
Adcom ACE 515 AC enhancer
Amplifier power activated even with unit turned off
Adcom ACE-615 AC enhancer Repair Service
switched outlets not kicking in. before unit stopped working, delay was much longer than factory specs
Adcom Amplifier Repair
Dead
ADCOM GCA-510, #A51100294
Unit has one channel that cuts out. Would not mind a complete once over with any upgrades that might be possible; eg. upgraded power supply/power cable, binding posts, etc. Please advise.
Adcom GCD 575 S/N 84504691 October 1988
Unit plays for a short time then begins to skip then plays very distorted.
Adcom GCD 575 serial no 03316421 Repair Service
Skips. Usually a second or two. Almost always skips forward (ie, I don\'t think I\'ve heard it skip backwards). This is a recent problem - it has had very little use over the past 10 years. When I started using it again recently it worked well for a couple months (it might have had trouble finding the beginning on very full discs, but otherwise well). Then it began the skipping, and that got worse and worse very quickly/ FYI - I have the original packaging - does that affect how I ship the unit? That\'s it Paul
Adcom GCD 600 CD player
Tray opens and closed immediately, not able to insert and play CDs
Adcom GCD 600 CD player
Unit turns on, tray does not come out. No signs of obvious damaged or blown parts inside, all fuses are good.
Adcom GCD-575
Continuously skips tracks all over the place.
Adcom GCD-575
Door immediately returns when opened. Player does not recognize CDs once input into the player.
Adcom GCD-575
1. The belt for the tray is dry rotted and cracked. 2. The fixed output rca jacks are broken. The metal sleeves (ground sleeves? are missing)
Adcom GCD-575 #82030282 Estimate-Based Repair Service
It does not read CDs, also it is missing an RCA cap in the back
Adcom GCD-575 (track skipping) Repair Service
started off skipping then wouldn't play tracks 1&2 now won't play at all. I like to keep this player if repairable. have GFA-545 & GTP-500 that still work fine. Also have GSP-560 that quit working.
Adcom GCD-575 Repair Service
Skips
Adcom GCD-575 Repair Service
Cd Does Not Play
Adcom GCD-600
draw don\'t open..won\'t play
Adcom GCD-600
draw won\'t open......unit won\'t play
Adcom GCD-600
The unit will skip after a few songs. The disc platter needs to be lubricated. The random or shuffle feature isn\'t so random but this may be normal.
Adcom GCD-600
Door will not open/close. Door not opening so assuming will not close as well...
Adcom GCD-600
Drawer doesn’t open ,carousel noise,track skipping
Adcom GCD-600
Powers up and will accept and reject CD's in the changer, but will only play limited tracks and play is erratic.
Adcom GCD-600
Powers up and will accept and reject CD's in the changer, but will only play limited tracks and play is erratic.
Adcom GCD-600 #337020048 Manufactured 9/1993
Draw Will not open. Before this happened the player was very senitive to vibration and skip a lot.
Adcom GCD-600 and Adcom GFT-555
I have an Adcom five disc CD changer that skips all desks except for one and four and an Adcom tuner that no longer stays locked so it gives static.
Adcom GCD-600 Repair Service
I have ordered 2 repair services and I am packaging and shipping a GCD-600 and a GTP-500 II together in one box. My GCD-600 began skipping occasionally about a year ago and it has slowly been getting worse. Initially, the majority of the time CDs would skip at the beginning of a disc (track 1 or 2). It recently began skipping elsewhere too, although not on every disc, probably 1 disc in 4. I have used a laser cleaning disc and Ive cleaned the laser by hand (alcohol and Q-tip) but it did not help. I was very gentle and careful, but it actually seems to be even worse now. Occasionally after a disc finishes playing and the player advances to the next disc, the tray will advance past a disc as if there were no other discs loaded. Also, it will now sometimes stop at a disc, attempt to load several times and then stop and do nothing (I believe I am hearing the arm/laser move into position and back out again several times). There is another problem that has been happening intermittently almost since new. After pushing the close button to load a disc, the tray will close and spin as usual but when the tray stops the LCD display does not show the number of tracks and the total disc time as usual (just \"1 01 : \") and none of the buttons work. The play button, the 1-5 disc selection buttons, the 1-10 track selection buttons etc do nothing. The open/close button usually doesnt work for the first few pushes either, but after several pushes eventually the tray will open. Typically when I close the tray again the second time, everything will work fine; the disc will load correctly, show the correct display and the buttons will function normally again. Turning the power off and on again will also typically correct the problem. Note: I made one internal modification a few years ago that I should explain. When closing the tray, it would slide in then immediately pop open again. I figured out that there was a switch inside that controlled that, and it appeared that the tray was not contacting the switch enough. Seeing no way to adjust it, I used a piece of shrink tubing over the arm of the switch to act as a shim so it would contact the tray sooner. I have not had any trouble with the tray popping open since, but I thought I should mention it in case there is a possibility that it may have something to do with any of the other problems.
Adcom GCD-600 Repair Service
plays and skips certain cd\'s, also either the remote or player sensor not good.
Adcom GCD-600 Repair Service
Tray won\'t open and while CD player recognizes that there are 5 CD\'s in player, and tray will shift to desired CD, the CD\'s won\'t play.
Adcom GCD-600 Repair Service
My Adcom GCD-600 suddenly no longer produces sound. It opens, closes and loads CD\'s and the counter works when I press play. The remote which I rarely use also works. The unit is part of an Adcom System; GFA-555II, GFP-555II, GFT-555II and GFS-6 Speaker Selector. The remainder of the system is working well. I have checked all the connections and everything is in place
Adcom GCD-600 Repair Service
Drawer does not open. CD does not play. Unit has not been serviced since we bought it in 1992.
Adcom GCD-600 Repair Service
after about twenty mim. or less play begins to distort.
Adcom GCD-700 #6547
lights only. no other functions
Adcom GCD-700 CD player
Hello Paul, My player starts skipping after about 1/2 hour of play on all slots. Thanks in advance for your help. Tim
Adcom GCD-700 CD player
No power, has not been used for some time.
Adcom GCD-700 CD player
Drawer does not function
Adcom GCD-700 CD player
drawer wont open
Adcom GCD-700 CD player Repair Service
* Drawer will not open, or disc tray rotate * Occasionally disc will not load - player will skip to next disc in sequence * Occasionally a disc will skip a few seconds * Unit Serial Number: CD7LFB12889
Adcom GCD-700 CD player Repair Service
1. loud buss coming out through audio both channels. 2. tray extremely noisy.
Adcom GCD-700 CD player Repair Service
Player is tracking erratically and often will not play the last few minutes of a CD. Not good for opera buffs.
Adcom GCD-700 CD player Repair Service
I purchased the unit knowing the analog audio output is not working. Please check the unit over. The box contain player, owners manual and remote. Thanks, Bill
Adcom GCD-700 Repair Service
tray will not open
adcom gcd-750 ser.# cd01db02331
every thing functions as should.no sound output.told needs ic 16c65.
Adcom GCD-750 CD player
No output both channels, cd player does load and play cd time code starts up. Thanks for any help on this.
Adcom GCD-750 CD player / no serial number
Broken power switch (I have an original switch I will send) - Control board issue, drawer won't open and "any" remote button press turns unit on or off.
ADCOM GCD-750 CD PlayerADCOM GCD-700 5 Disc CD Player
The GCD-750 has a few issues. Most notably, it simply won't read/play a disc or it jumps into the disc a few tracks and hangs up. I keep my CDs in clean, pristine shape. Not home burned discs, major labels (2500+). Then sporadically it might begin to play, but the signal was barely audible. I thought it might be loose/bad cables or possibly the pre-amp (a GFP-750). But swapping an inexpensive Sony player into the same CD input with the same cables and the sound was fine. Prior to this issue, the player would occasionally skip a track. After a thorough disc cleaning, it would be ok for 20-30 minutes then skip or stop. On another odd issue, the lamp inside the player’s lcd readout quit years back, I had it repaired through an Adcom certified dealer, Tune Street in Great Barrington, MA, but when it was returned, rather than the amber/yellow light they put in a blue-ish/white light. Is it possible to return to factory light? -- The GCD-700 has similar problems as the GCD-750. It has consistent difficulty starting/playing CDs after advancing 1 disc to the next. For instance; Disc 2 ends – the player advances to Disc 3 successfully then stops at the instant it should play. This has been happening for months now. Just weeks ago the player developed an output issue where the signal from one channel was virtually dead, the other I believe is ok. When the player works, it’s a great 5 disc player, but the past 6 months it’s been useless. -- Panamax MAX 5510 PRO ACRegenerator has a damaged power button. This is 1 of 2 units I have, the 2nd still works flawlessly. The unit for repair new in the box for 5 years before being used. It was used very lightly from 2012 to 2014. It never took any surges or hits. However, a very heavy handed “house sitter” was trying to turn the unit off (despite already being off) as the meters were illuminated but the unit was off. The power switch works on a delay, but the button must have been repeatedly jammed in. Something broke and now it won’t engage and remain on to power on the components. I can email the PDF of the manual if helpful. The power button does have a trick to it when working, now it’s just a spongy, broken button. -- That’s it. If you’d like any additional details call or email anytime. Thank you very much! Doug
Adcom GCD600
Skips badly. Sometimes won't skip disc I mentioned I had two of these units. The other is at our summer home in Michigan. If the repair on this unit is successful, I'll send the other when I return to Michigan.
Adcom gcd750 cdo1db00180
Static in audio also toggle on off switch acting up weird things going on. I use two remotes to avoid toggle main problem static in audio
Adcom GDA 700 #da71db00559
Unit stopped working. Looks like it's getting power but no output.
Adcom GDA-700
Making noises, vibrating.
Adcom GDA-700 Estimate-Based Repair Service
I have a GDA 700 that makes clicking sounds and loses the digital signal for a few seconds. The \"sampling rate\" led indicator on the fron panel goes out when the signal drops out. It happens with a source from any of the inputs (balanced, optical or coax). Sometimes it works for a few minutes, but eventually it drops the signal repeatedly.
Adcom GDA-700 Repair Service
I have a unit that had no output and, took it to a Mom&Pop repair shop and, They told me they couldn't fix because it needed a switch! Well, I picked it up today and, it's still doing the same thing minus the Phase switch (S300)! I found you via an Internet search and, Was wondering if you had this switch and, could repair this unit? At this very moment, I have no idea what's wrong with it and, Beleave they didn't either! Your my last hope for this unit! Please let me know! Thank's
ADCOM GDV -850
Tray won’t open. Disc still inside. Won’t read or spin disc.
Adcom GDV -870 #DV870dcs0173
no signal from HDMI port, sound does not work out of the left and right audio outputs picture from component video output is poor in quality. Dvd tray sticks sometime.
Adcom GDV-850
Front panel LED display doesn\'t work. Reads CD\'s fine but won\'t read DVD\'s. Though it will occasionally read a DVD after manually resetting.
Adcom GDV-870 Repair Service
UNIT HAS NO POWER. PLEASE DO FULL CHECKUP.
Adcom GDV-870 Repair Service
Paul, Replace laser drive mechanism and test. Thanks for taking care of this repair for me. It is nice to know that there are still some good and fair people to deal with. Regards, Peter
Adcom GFA 5300 s/n A531fb02806, Made in Jan, 1996.
I hear a thump and a buzz in my speakers when I turn it on. Also hear distortion when I turn up the volume.
Adcom GFA 545 ll
Distortion Unit in need of new caps and brought up to factory specs
Adcom GFA 5500 #
Amp lacks power & bass. Sounds weak compared to my Marantz SR7007
Adcom GFA 5500 No serial on the back...
Needs overhaul. Caps are lumpy. Please change caps and big caps. Also, look over and change whatever you think is bad or failure prone. If anything serious or you have upgrade/mod recommendations, please call me at: 917-613-5433. Thanks! Paul Bento your email: Hello Paul, $225 caps on the amp boards and small power supply caps add $200 if you want to replace 4 big power supply capacitors plus shipping
Adcom GFA 555II serial 409021701
Right channel gone. High current light always on for right channel. Thank you in advance for the help!
Adcom gfa 565se
left channel is dead. Left rail fuses blew. Replaced with right rail fuses, blew again.
Adcom GFA 585 #044300655
DC offset, Right side = 1.5 VDC left is .82 VDC Very bad hum when turned on. Can be eliminated by bonding the preamp to the amp.
Adcom GFA 7805
The RS (right rear) channel went out about a week ago and the red Thermal Protection light is on.
Adcom GFA-1A #004811 Estimate-Based Repair Service
The B channel has low gain and distortion. As you mentioned in your email response to my follow up question, \"... does that price ($150.00) cover an overall recondition of the amp?\" \"Second channel also will be checked and all electrolytic capacitors and overheated parts replaced.\"
Adcom GFA-1A #004811 Repair Service
This is a unit that you repaired (bad channel, replaced caps) about a year or two ago. It now has an intermittent oscillation on Channel A. It starts as a clicking noise, then gradually increases in frequency to about 1 or 2 kHz, then stops. After a while it repeats. This happens by just applying power, with no inputs plugged in.
Adcom GFA-1A #4815 GFP-1A #028596 Nakamichi MB3S #16933
GFA-1A- pops GFP-1A- Input sw Nakamichi - stuck in CD changing
Adcom GFA-2535 Repair Service
Blows main fuse
Adcom GFA-5300
Channel cuts out
Adcom GFA-5300
I hear a thump and buzz in my speakers when I turn it on. I can hear distortion when I increase the volume. I have a Adcom mosfet GFA 5300 amp s/n A531FB02806 made January 1996.
Adcom GFA-5300
Right channel out Left Channel volume varies Love it when it was working
Adcom GFA-5300 NAD7140 EMB1000
GFA- 1ch is out NAD 1 ch out SUb not working
Adcom GFA-5300 Repair Service
Right channel output light is always brighter than left. Sound out of right channel is distorted especially in low frequencies.
Adcom GFA-535
Customer would like the unit tested and refreshed. The amplifier and preamp that I am sending have been sitting unused for several years. He wants to use these now, so I suggested he have them freshened up. I am unaware of specific issues aside age on this unit.
Adcom GFA-535 II, s/n = AP19681224
After playing for a while the unit loses the output to one or both channels. I have found that if the power switch is turned off and then back on, the unit will operate normally.
Adcom GFA-535 Repair
One of the channels does not work
Adcom GFA-535 repair service
Right channel- static, noise, no sound.
Adcom GFA-535 Repair Service
Thermal protection light is on, no sound. Is GFA-535 II model. Serial # A3-1FB 03661. Please check shipping charge. Should be less than $35. Thanks, Stephen
Adcom GFA-535 Repair Service
One Channel of this power amp is distorted...I have removed the 5 amp fuse and 4 amp fuses... Hope you can fix it. It\'s a great amp
Adcom GFA-535 Repair Service and PS-12-180 Subwoofer Repair Service
GFA-535 Does not work at all
PS-12-180 No sound
Adcom GFA-535II #2403 Adcom GTP-400 #8231
Right ch is not working
Adcom GFA-5400
peak distortion LED lights when unit is turn on...broken fuse socket holder...
Adcom GFA-5400
Intermittent channel outage, volume goes up and down, by itself, I suspect everything needs to be refurbished, its 20 years old
Adcom GFA-5400 #A541FB 11391Adcom GFP-710 #P711FB 01849
The Power amp seems to have issues in the left channel. There is electrolytic fluid spilling so most likely bad caps are the issue. The Preamp Has the left channel out inside the unit many of the caps look bad as well. Please repair and bring to factory specs or better! Thank you
Adcom GFA-5400 Adcom GTP Niles speaker selector
NO SOUND OUT OF RIGHT SPEAKERS. IF I HOOK RIGHT SPEAKERS TO LEFT SIDE OF AMP THE SPEAKERS WORK SO ITS NOT THE SPEAKERS.
Adcom GFA-5400 Repair Service
Right channel thermal overload indicator always on, no audio out from right channel.
Adcom GFA-5400 Repair Service
one side no sound and cover opened and i think it blow fuse too
Adcom GFA-5400 Repair Service
Dead (or almost dead) left channel
Adcom GFA-5400 Repair Service
Left speaker keeps blowing out since it was new with high end speakers. Right side over drives the woofer with a snap.
Adcom GFA-545
Hi Paul, Amplifier right channel does not appear to work, although left is fine. Wondered if we could arrange to drop off at your location? Not wild about sending something this heavy through the post. Thanks. Ed. Ed. Hello Edward, yes it will be covered by $150 repair service. It may exceed only if the power transformer is bad. Since the one channel is ok then the power transformer should be also fine. Best regards, Paul 908-458-6072 EBC Electronics web: www.ebcelectronics.com email: ps@ebcelectronics.com
Adcom GFA-545 #AD10108-713 Repair
Clip light one channel
Adcom GFA-545 II
Have a GFA-545 II. Son did a "bass test" on it and blew the input fuse. It was blackened and I'm told that indicates internal component damage as well. I replaced the input fuse and have determined he blew left channel.
Adcom GFA-545 II serial # A0009534-143
Doesn't power on. Fuse was blown, replacing fuse only causes new fuse to blow.
Adcom GFA-545 repair service
POPPING SOUND ON START UP, NOT AS CLEAN SOUNDING AS IT SHOULD BE, UNIT WAS DROPPED
Adcom GFA-545 repair service
When powering down with no input signal, the amp "winds-up" (like a siren) and then belches distortion. Sounds like a vary large man passing gas.
Adcom GFA-545 Repair Service
Intermittent Right Channel and making annoying crackling sounds, suspect loose terminal connection on right channel. Left Channel not working/blown. No sound from left channel.
Adcom GFA-545 Repair Service
PURCHASED ON EBAY $250.51 ENTERPRISE DATA RESOURCES Seller: Member id ebcelectronics ( Feedback Score Of 94) Adcom GFA-565 repair service (300445261217) Paid on Jan-20-12 Price: $210.00, Qty: 1 $210.00 Estimated delivery: January 24 - January 30, 2012 UPS Ground $40.51 Message to ebcelectronics: GFA 545 II powers on no output to either channel.. need refurbishment as never serviced. thanks Subtotal: $210.00 Shipping & handling: $40.51 Total: $250.51
Adcom GFA-545&GTP-500II Repair Service
Amp does not appear to give output. Was hand-me-down from a friend. Emailed you already about this and you suggested I could also send along the GTA 555 preamp for testing. So both are being shipped. Thanks.
Adcom GFA-545II a0024417-351
Shorted one of the output leads, now it blows the main AC fuse on the back of the amp everytime it's turned on an played. Fuses inside are not blown, unit did smoke pretty badly when it happened, need it repaired ASAP, thanks!
Adcom GFA-545II Repair Service
> Hello, I have an Adcom GFA-545 amplifier that I'd like to have > repaired. I believe a line input power surge fro lightning took out > the input state, the power LED doesn't illuminate. Perhaps it's not > repairable but I liked it so much would pay for a diagnosis to find > out. Can I send it in for a check up?
Adcom GFA-5500
Channel has gone out
Adcom GFA-5500
Whenever it is on, it is very noisy (lots of loud popping and hissing sounds).
Adcom GFA-5500
Right channel distorted.
Adcom GFA-5500
One side hoter than the other and there is hissing and cracking from the right channel
Adcom GFA-5500
WEAK LEFT CHANNEL ON ALL SOURCES. USING WITH YAMAHA HTR-5250 ON PRE OUTS. HAS A STATIC AND BREATHING PUMPING SOUND IN LEFT CHANNEL, ALSO AMPLIFIER HISS IN BOTH CHANNELS. TOOK ADCOM OUT OF CIRCUIT AND HOOKED SPEAKERS DIRECTLY TO YAMAHA AND STRONG SOUND AS NORMAL OUT OF LEFT CHANNEL. SPEAKERS SOUND GOOD , NO DAMAGE, ALSO USED A SECOND SET AND ALSO OKAY. SWAPPED PATCH CORDS BETWEEN PREOUT AND MAIN IN AND NO DIFFERENCE. TROUBLESHOOTED TO THE LEFT CHANNEL IN THE ADCOM. YAMAHA IS QUIET, NO HISS AND BOTH CHANNELS EQUALLY STRONG WITH BOTH SETS OF SPEAKERS.
Adcom GFA-5500 amplifier #01109
Right channel is not working, I was told it needs a \" board\".
Adcom GFA-5500 #10578
Right Channel has very audible \"static\" noise. This noise includes some element of \"white\" background noise with popping sounds from time to time. When the speaker cables are swapped at the amplifier binding post, the noise and popping swapped as well - consistently following the same amplifier speaker output. Static and popping also continues with no component input (all source and preamplifier components powered off). I am not sure if the left channel has any issues since I did not get a clean listen with the right channel making so much overhead noise. Please repair/restore my amplifier back to the audio quality/specifications I used to love :) I am also missing a single rubber filler plug on the side of the chassis - if you happen to have one for replacement, that would be great! Thanks, Tim
Adcom GFA-5500 #A55LFB 08596 Estimate-Based Repair Service
1. Strange noises in right channel when powering down. 2. Power button hard to push.
Adcom GFA-5500 GFA-5503 channel pcb Repair Service
The left channel ceased to work in ADCOM GFA5500. I swapped the PCBs, and then the right channel had no signal. This isolated the problem to the left channel PCB. No repairs have been attempted, so you are getting the part \"clean\". I will adjust bias and dc when the board is returned.
Adcom GFA-5500 Repair Service
a third party had a party and spiked the amp apparently. Blew speakers on the right channel and the right channel of the amp is distorted etc. It was spiked by having it turned up and connected to a computer source then turning the computer up as well. Probably some sort of crappy club music with exponential base . ( it was my son home from Europe, enough said) So, I would like the whole thing gone through a it has had many years of use. thank you for your consideration to this problem Let me know my next step Stan Fullerton
Adcom GFA-5500 Repair Service
Distortion static
Adcom GFA-5500 Repair Service
Left channel squeal and occasional pop through Vandersteen 2CE Signature II speakers. On power up and during normal play. With or without RCA input connected or not. D.C. bias across +/- amplifier terminals after a 10 minute warm up. Left channel: -15 millivolts and changing, Right: +10 millivolts and solid as a rock. Serial number: A55LFB 04221 Amp chassis is in near mint condition and is scratch free. The rack mount ears have been removed. Flathead screws remain. Unit is wrapped in plastuc and is double boxed (not original) with a double layer of styrofoam sheets.
Adcom GFA-5500 Repair Service
has very weak bass response, runs warmer on on side of the amp than the other side
Adcom GFA-5503
One channel buzzes two channels work but they have distortion
Adcom GFA-5503
check and upgrade
Adcom GFA-5503 Repair Service
all channels poor sound quality , noise,etc
Adcom GFA-5503 Repair Service
one channel not working , please check others, i don\'t believe this amp has ever been serviced
Adcom GFA-5503 Repair Service
Paul, I have buzzing noise at each of the 3 outputs. The sound comes out, but there is a noticeable buzzing noise at each of the 3 outputs. I am sure you and your team will fix it, as with the other 5 adcoms you have repaired for me.
Adcom GFA-555
Left channel output is much weaker than right channel output.
Adcom GFA-555
Output fuses blow upon power up Amp was serviced previously by EBC... Several years ago. Address has changed since that time correct address is above.
Adcom GFA-555
Bad preamp board
Adcom GFA-555 # 015298
one channel out
Adcom GFA-555 #...5153
(can only make out the last few numbers; I bought it on eBay over 10 years ago) On/off switch doesn't work. Fortunately stuck in On position. Right channel RCA input connector broken. Would like both problems repaired.
Adcom GFA-555 #..0618 Repair Service
Upgrade
Adcom GFA-555 #..6443 Repair Service
Hum
Adcom GFA-555 #015937
Left channel
Adcom GFA-555 #651-19712
Internal fuses blown, replaced and tried again, main external fuse blew. Noticed right channel speaker wires slightly touching each other on right channel at wall connector near speaker. (The volume was very low on that speaker when I substituted the Adcom with a different amp and I noticed the \\\"short\\\" -- surprised I was getting any sound). Tested the Adcom again with new fuses and old woofer and it instantly melted the voice coil. NOTE: I might not have replaced the blown fuses with fast blow 10 amp fuses. Also note, Stereo Repair in east setauket NY had repaired and upgraded some parts several years ago. ALSO NOTE: If this repair doesn\\\'t add 10 years of life to the amp, I may not want to repair. Also curious why this happened and if both channels have issues. Thanks, JS
Adcom GFA-555 #732-26137 Repair Service
On off switch
One channel does not work
Screws
Adcom GFA-555 #744-28532
Powers on, no sound.
Adcom GFA-555 #832 33825/Adcom Binding Posts installation($50)+2 years extended warranty($50)
Want checked out and serviced as needed for proper function per Adcom specs as you are also servicing my GTP 500 Receiver/Pre and my ACE 515 Power conditioner, so I know all is well with all components and can start life anew,+ upgraded binding posts and 2yr.warranty Thanks, Byron Cacheris
Adcom GFA-555 #91537880
No right channel and RCA's pull out. Other mod's recommended?
Adcom GFA-555 822-32177
RT channel distorted. Left channel no output. The amp was working fine until the RT crossover shorted. The RT side 100 ohm resistor was found to be damaged and was replaced. This restored sound to the RT channel, but it is distorted. The LT channel worked fine after the shorted took out the RT channel, but now does not work.
Adcom GFA-555 ACE-515 GTP-400 Repair
The ACE-515 would switch the amp on/off rapidly blowing the fuse on the amp. I replaced the fuse and bypassed the ACE unit but could still not get anything to function properly. I would like to have all three units checked/repaired . I would also like to have units upgraded as needed, (gold post conn. on amp) etc.
Adcom GFA-555 GFA-555II
smelled something smoking
Adcom GFA-555 GFA-555II
Noisy channel, pops when you turn it off.
Adcom GFA-555 GFA-555II
Distortion alert lights come on prematurely.
Adcom GFA-555 GFA-555II
model adcom gfa-55511 serial # 245024275 left channel muffled not crisp high sounds also noise from left channel at power down.
Adcom GFA-555 GFA-555II
Left channel distortion alert light flickers at moderate levels and red thermal protection light came on at higher level.
Adcom GFA-555 GFA-555II
GFA-555II when used in the Bridged mode causes the speaker drivers to \"wobble\" (for lack of a better term) (Polk SDA SRS 1.2TL). Then when the unit is turned off there is a huge loud pop through the speaker. I have a second GFA-555II that does not have this problem. Please be sure to test the amp in Bridged mode upon repair. The amp seems to be OK in standard stereo mode. Thanks, Bill
Adcom GFA-555 GFA-555II
The right channel has bad outputs and blows fuses and a loose power switch. The left channel works fine.
Adcom GFA-555 GFA-555II
Shuts off sometimes and red light comes on does this intermittently not all the time sounds like the board needs to be cleaned properly. Client Robert Shannon Company Definitive Audio
Adcom GFA-555 GFA-555II
Constant noise / distortion in left channel. Multiple pops and thumps in both channels upon shutdown.
Adcom GFA-555 GFA-555II
I believe the left channel is out. Has been a while since I played it but I think it is the left. Most likely a fuse but I wish to have the service.
Adcom GFA-555 GFA-555II
Right channel went dead. 2nd CD rail fuse blown. Sent to another repair facility. They replaced many of the transistors (and replaced blown fuse). Came back and right distortion light came on immediately. 15s after putting sound through it, right channel went dead again. Replaced fuse, reconnected to power (only, no speakers, no preamp), right distortion light came back on immediately upon power-up. Turned off immediately.
Adcom GFA-555 GFA-555II
No output after soft pop. Unit was playing at a very low level in bridged mode. P
Adcom GFA-555 GFA-555II
No output after soft pop. Unit was playing at a very low level in bridged mode. P
Adcom GFA-555 GFA-555II
The amplifier has a dead channel. Please note that I will be moving from NYC to Atlanta by March 1, so the shipping address above is my new Atlanta address. Please call or email me when the unit is ready to confirm the address.
Adcom GFA-555 GFA-555II (repair and IEC power socket installation )
Original amp purchased in 1990. I would like for the electrolytic capacitors to be replaced in both channels along with the standard repair. I would also like to know if it is possible to convert the 2 prong power cord to a detachable 3 prong with ground. If it can be done, please call or email with estimate. I recently had my other GFA-555II up there for repair (WO #2118) it had electrolytic capacitors replaced in both channels & it already had the detachable 3 prong power cord. Thank You, Bill
Adcom GFA-555 GFA-555II 217021376
wont produce sound got wet
Adcom GFA-555 GFA-555II repair service
Second 555
Adcom GFA-555 GFA-555II repair service
A few seconds after the power is turned off, and as the pilot light goes off, my Adcom GFA 555 Mk II makes cracking/popping and sometimes a wailing sound. Seems to happen mainly in the right channel, but crosses to the left a bit also.
Adcom GFA-555 GFA-555II Repair Service
dead channel
Adcom GFA-555 GFA-555II Repair Service
1.3 VDC on right channel thermal LED on.
Adcom GFA-555 GFA-555II Repair Service
I am original owner of this unit and noticed that at least one of the channels has significant distortion on super low end. I have used with two sets of speakers and the pair were brand new. Love this unit\'s sound when all is working.
Adcom GFA-555 GFA-555II Repair Service
Adcom GFA-555mkII has one dead channel. There may be other issues as well, but the amp has not been abused or modified. My understanding is that this service covers whatever it takes to get it working properly. - Mark Holt
Adcom GFA-555 GFA-555II Repair Service
Thermal overload light is one
Adcom GFA-555 GFA-555II Repair Service
right channel inop. Speaker wire was pulled out while playing. Blown main fuse.Burnt resistor near transistor. Amp has been modified by Musical Concepts (mostly power supply).
Adcom GFA-555 GFA-555II Repair Service
Left Channel outputs +85 VDC. to speaker terminals. Right Channel blows 7 Amp V+ fuse.
Adcom GFA-555 GFA-555II Repair Service
One channel dead but when working was down on output compared to the other. Makes loud thump when turned on or off. Also please fix anything else you find.
Adcom GFA-555 GFA-555II Repair Service
saw a huge amount of smoke coming out of amp. Did not power back on afterwards. Occured when I was trying bridging as mono.
Adcom GFA-555 GFA-555II Repair Service
My GFA 555II has a low hum in it which sounds like a ground loop hum. I have changed cords, cables, etc and the hum is still there. Is this covered in the flat repair fee?
Adcom GFA-555 GFA-555II Repair Service
no sound, dead channel, fuse are ok.
Adcom GFA-555 GFA-555II Repair Service
In protect mode. Blows 3 AMP fuses.
Adcom GFA-555 GFA-555II Repair Service
both channels out
Adcom GFA-555 GFA-555II Repair Service
One channel is out. Please replace capacitors and related parts for both channels. Thank you.
Adcom GFA-555 GFA-555II Repair Service
Left distortion light on and static in left channel. I don\'t have a pay pal account. Please advise on payment.
Adcom GFA-555 GFA-555II Repair Service
One channel out, turn on thump, that\'s all i am aware of.
Adcom GFA-555 GFA-555II Repair Service
blows fuse on left channel after 10 minutes of use
Adcom GFA-555 GFA-555II Repair Service
One side does not have any output anymore. The problem occurred instantly while I was listening to it. It is not the fuse.
Adcom GFA-555 GFA-555II Repair Service
Right channel blown. Speaker wire came loose and shorted the channel.
Adcom GFA-555 GFA-555II Repair Service
GFA-555II unit. Right channel is \"dead\". Thermal Protection light is on whenever the unit is powered on. Left channel appears to be working properly. Rest of the system (speakers, preamp, tuner, etc.) all appear to be working properly when another amp is put in place.
Adcom GFA-555 GFA-555II Repair Service with new binding posts
No sound from speakers. The front indicator light is on when the power switch is turned to the on position. Both channels dead... No sound at all.
Adcom GFA-555 GFA-555II Repair Service+2 years extended warranty($50)+binding posts (50)
The unit took a power surge of some sort, with the right channel not functioning any longer. I initially saw that the internal fuse was blown, replaced it- but then saw a resistor start to smoke. I unplugged it- and am sending it to you for evaluation and full restore/repair.
Adcom GFA-555 GFA-555II Repair Service/2 years extended warranty($50) /
Channel imbalance, left channel sounds weak. Can detect DC offset in left channel but my meter not sensitive enough to quantify. Overall lack of power compared to when I first purchased amp (was bought used). Would like amp thoroughly checked out and any failing components replaced. I drive the amp with an Adcom tuner/preamp and the amp drives a pair of Vandersteen 2Ci\'s.
Adcom GFA-555 GFA-555II [2 years extended warranty($50)+protection circuit ($90)]
dc to speaker since the speaker fried
Adcom GFA-555 GFA-555II/2 years extended warranty($50)
Dead channel
Adcom GFA-555 II 347029450
I bought it on eBay with known issues. Here they are: 1: The right channel has a 45-50vdc offset at the output. The output transistors were replaced, prior to me purchasing it, with ADC-D42's and ADC-b55's. It is not blowing fuses in that channel. None of the outputs, drivers, diodes and resistors test bad on the Output chassis. All of the transistors, resistors, and diodes in the preamp section test good as well. I'm not sure what I am missing. 2: The left channel is blowing fuses. But not finding any shorted outputs. This channel had the same output transistors but only one of each. The other 6 were ADC-D42's and ADC-B55's.
Adcom GFA-555 Repair Service
RCA connectors, preamp pcb
Adcom GFA-555 Repair Service
One channel is out. Bad power switch. Check thermal protection.
Adcom GFA-555 ser #0106
Left channel protection light.
Adcom GFA-555, serial number 745-190115
One channel sounds distorted and keeps going in and out. Has never been serviced in 30 years.
Adcom GFA-555II
left channel distortion alert
Adcom GFA-555II #0818
Right ch distortion
Adcom GFA-555II #1726 BW704
Adcom - humm Speaker - midrange
Adcom GFA-555II #23009 and Adcom GFP-1 #2204 Repair Service
GFA-555II - water damages
GFP-1 - problems with volume pot
Adcom GFA-555II #241023849
I have a Adcom GFA-555II and the right channel went out. While I was trying to figure out what went wrong the left also went out. I swapped out interconnects and preamps and still no sound so I\"m assuming it\'s the amp.
Adcom GFA-555II #411022361
I have an Adcom GFA-555-II amplifier approximately 20 years old. I have enjoyed its high quality function without problems until recently when I heard a loud pop from the left speaker which immediately stopped working. The right channel continued to work properly. Both the right channel positive and negative power supply fuses had blown. I checked the wires and connections to the speaker which were intact and not shorted and replaced the fuses. When I turned on the amp the speaker popped again and the fuses were blown. I disconnected the speakers and opened the amp for inspection. I saw no indication of burning of any of the components on any of the PCBs so I disconnected the left output PCBs from the + and - power supplies and reinstalled the fuses. On urn on without speaker load all fuses remained functional and the power supply voltages to the right output PCBs and the disconnected leads to the left output PCBs were +/- 87 volts as were the power supply connections to the input driver PCB. Reconnecting the power to the - output PCB alone, leaving the + PCB unpowered, did not blow the fuses and the measured - PS voltage on the -PCB was 87 V. I then disconnected the PCB power and reconnected the + PCB power. In 3-4 seconds after turning the amp on, the C302 blew (smoked) on the unpowered - PCB. I have not reconnected the PS leads to the left channel output PCBs.
Adcom GFA-555II #4773
Right ch
Adcom GFA-555II 331026955
The unit worked for many years as a center channel for my system but recently it stopped working. When my wife and I were outside the kids tried to reconnect the theater after they turned it on first. It had been disconnected because we recently had carpet installed. Well when they attempted to install the speakers the center channel completely fried and the fuses on the Adcom blew. After replacing the fuses and hooking it up correctly the adcom\'s fuses keep going out. Now, the fuses kept blowing and the amp just seemed to burn up. I think because it is so old maybe the capacitors failed or something like that. I also have a GFA 5802 that has been sitting on my workbench for 4 years. It ran the front speakers for a long time and it sounded great. One day it just stopped working on both channels. Our local shop tried to sell me another amp for almost 5000 dollars. I found the same amp, an Anthem P2 on Ebay for 1500 so I scoop that up. I would like to repair my other Adcom amp, the 5802 as well. I will submit a separate ticket or request online for that as well. Thanks for your time, Dave Iadeluca
Adcom GFA-555II repair service - ebay
The amp was working fine then one day it started blowing the fuse on the left channel only. The right chanel still works fine and all speakers have been verified as ok. I replaced the fuse with a 7 amp which it calls for and heard a pop then a fizzle from inside the amp. You could see where something burned itself out and then you could smell the wonderful smell of burned electronics.
Adcom GFA-555MKIISerial# 223022671
Left Channel Instantaneous Distortion Light On Solid with no input signal. DC output is higher on the left channel verses the right with no input signal. Started about a week ago with no event proceeding. I have heard that the caps on the input board as the cause but also that the transistors on the input board as a cause. R107 on the input board has gotten very hot. What ever parts have to be replaced, please please replace it on both channels and if it is transistors please match the transistors. Also please match the BIAS and install a softstart on the AC line. The amp has a dual 1kva power supply with 120k mfd storage bank and the inrush current is too much in my opinion. This amps DC rails are 80-90vdc and the output transistors have also been upgraded along with bypass caps etc. I am told it is good for 600wpc@8 0hms. I request that if any modded parts be replaced that the values after the mod be kept the same(please don't mod the mod). Also please install upgraded binding post to accept 8AWG speaker wire. If you have any questions please feel free to call me. Thank you, Jeremiah
Adcom GFA-555MS
Adcom GFA-555MS. Serial # A555MSDBT0240 Unit was purchased 04/25/2016...now has no right channel output.
Adcom GFA-555ms Serial Number # A555MSDBT0240
Right Channel Out...
Adcom GFA-555SE
right channel is out. blowing fuses internally on that bank. shorted transistors. And this is for the 555se. also sending another box with gfp 750. for small repair
Adcom GFA-555se #A555SEDBT0161
Right channel is not functioning.
Adcom GFA-565
Amplifier makes a cllick about every 30 seconds.
Adcom GFA-565
HIGH DC OUTPUT AT SPEAKER OUT. AMP HAS BEN OPENED BY PRIOR OWNER. THEY CLEANED CONTROLLER BOARD AND REPLACED SOME CAPS WITH NO RESAULTS.
Adcom GFA-565
2 amplifiers. one popped a lot and got louder, now does not turn on. then the other one started popping but will play am placing 2 orders
Adcom GFA-565
Shows about 20 volts DC at the output with no input. Suspect it is the common problem. I will be heading through new Jersey in the next couple of days and can drop the amp off.
Adcom GFA-565
Blows fuse everytime you turn on
Adcom GFA-565
The GFA-565 blew my speaker fuse when turned on one day after not being used for a while. Replaced that amp with another one. Want to have the damaged on repaired.
Adcom GFA-565
Poping at start up and noise at low volume. Failed voltage test.
Adcom GFA-565 # 004-213036
loud turn on/off pop noise , after a few weeks a smell, after disconnected from system and power, red light goes on but silence from the amp. The speaker is still go as connected other amp to it to test it out. according to your ad the cost to fix is $240 plus cost of shipping ($24) . Is this price correct?
Adcom GFA-565 #014215241
Speaker is buzzing/humming with sound coming out lightly. Switched speakers and switched other speaker to other amp. So problem diffidently in the one amp You did do a full service upgrade on it a few years back
Adcom GFA-565 #007213950
Distortion and \"pops\"
Adcom GFA-565 #0131
hum
Adcom GFA-565 #019215698 and Adcom GFA-565 #019215691 Repair
I have a used pair of Adcom 565's i would like gone through before they possibly pumd D.C. into my B&W 801 matrixes!...i have no shipping cartons....HELP!.. Thank You
Adcom GFA-565 #019215843
I have two for mono. one works the other has fried a speaker,not sure what is going on.
Adcom GFA-565 #951212054, Adcom GFA-565 #951211918, Adcom GFA-565 #951211917, Adcom GFA-565 #004-212745
All tested bad as per your description with multimeter test. All have leaky caps. One also has a missing on/off switch. Ship to: Latham Marine Attn: Tom Gongola 280 SW 32nd Court Fort Lauderdale, FL 33315
Adcom GFA-565 007213982
2 amplifiers. one popped a lot and got louder, now does not turn on. then the other one started popping but will play am placing 2 orders
Adcom GFA-565 014215087 Repair Service
Still works but need to update
Adcom GFA-565 014215241 Repair Service
Dead
Adcom GFA-565 2pcs
DC voltage at speaker terminals
Adcom GFA-565 2pcs
1 unit appears fine Other unit turns on with the instantaneous distortion alert on, with no signal coming into it.
Adcom GFA-565 2pcs
purchased low hours on, excellent physical condition working amps.After a UPS multiple trip shipping debacle one amp doesn\'t work.Had it checked locally and was told it suffered from the inevitable cap leakage problem. The seller had them checked,tested and the paperwork showed something called \"a cap kit\" replacement.
Adcom GFA-565 2pcs
Addressing cap issue and overall review of units.
Adcom GFA-565 2pcs repair and adding speaker protection circuit
Please use return tags included These units will be shipped back to my work. David Anderson 20 Grimes Street Eugene, OR 97402 Leaking CAPS Have not used in a long time
Adcom GFA-565 2pcs Repair Service
Both amps are in protection mode (lights on) no sound, would like to have the cap upgrades as well as replace fuses with proper ones. Thank You.
Adcom GFA-565 2pcs Repair Service
Amp 1 - This amp powers on but no green lights go on inside and I do not read a voltage across the outputs. It has NEVER been serviced, there is NO amateur \"repair\" damage. Amp 2 - This amp powers on, green lights go on inside and I read a 3 volts across the outputs.
Adcom GFA-565 2pcs Repair Service
Both Amps produce static in the speakers. One started a year early so I used a splitter and only had monoral music but then the other started the same thing so I stopped using as I was afraid of speaker damage. The serial numbers are Unit One: 951211693 and Unit Two: 019215523.
Adcom GFA-565 934210204 Repair Service
Dead
Adcom GFA-565 934210211 repair service
Dead
Adcom GFA-565 amps 2 pcs Repair Service
I DO NOT HAVE AMPS AT SHOP WITH ME I WILL GET SERIAL NUMBERS.
POPING NOISE COMING OUT OF SPEAKERS---NOISE WHEN PLAYED IN PHONO STAGE
Adcom GFA-565 Monoblock #943211229
.5 - 20 volts (and more) DC offset at speaker terminals. Right heat sink gets very hot when operating. Used unit. Caps (allegedly) replaced.....What is your current turnaround time (approximately)? Thanks! Tim
Adcom GFA-565 Repair
One of the amps that you installed a DC protection circuit in is acting up. When I power up the amp the light blinks (I guess while the protection circuit is activated) then a series of sharp crackling noise like static electricity comes through the speaker. I don't think any speaker damage has occurred but I immediately turned the amp off to avoid any potential damage to the speaker.The second amp blinks and you barely hear some noise before it clicks on and then is silent.
Adcom GFA-565 repair service
Second 565 first was ordered through ebay. one is dead the other is fine but should have the service done preventively
Adcom GFA-565 repair service
This amp appears(and i was told) to have the fix for the dc offset problem. I was listening to it and then it went silent. checked fuses, left(looking @ frt of amp) rail fuse was blown. replaced with 10amp fuse(as precaution) powered up, smoke poured out of left of amp. c203 cooked(electrolyte spray). i replaced this cap and the one on the right side power output board and also the caps on the soft star circuit. none of these caps appeared to have been replaced when the small signal board was done. powered up with 6amp fuses in rails(as precation). small puff of smoke on left side again and rail fuses blew. whatever you do to fix this amp, i would recommend replacing that c203 again. i suspect that some of the outputs may be shorted. if you need any further information, please let me know. i bought this amp used so i don't know too much about its history.
Adcom GFA-565 repair service
HUGE OFFSET! Replaced nasty caps - no help.
Adcom GFA-565 repair service
Big offset! Replacing ugly caps did not help
Adcom GFA-565 repair service
The unit began making feedback sounds at start-up. It soon after quit working. I took it to a local certified Adcom service center in Houston, they diagnosed the fault to a board that they wanted to replace. However, they discovered the board was no longer available and so returned the unit it me without being repaired.
Adcom GFA-565 repair service
Amp has all of the symptoms and issues you describe on your repair services page. Amp took out a woofer in the speaker it was connected to.
Adcom GFA-565 repair service
Amp is working fine now, and has never had any issues, but I want the same service and parts replaced as her sister amp that is not functioning and I am also sending.
Adcom GFA-565 repair service
Works, needs a service.
Adcom GFA-565 repair service
works fine, needs a service.
Adcom GFA-565 repair service
Doesn't work
Adcom GFA-565 repair service
Doesn't work
Adcom GFA-565 repair service
No sound
Adcom GFA-565 repair service
No sound
Adcom GFA-565 repair service
very distorted low volume
Adcom GFA-565 repair service
Works. Need a service for leaky capacitors problem.
Adcom GFA-565 repair service
The unit had started to crackle and pop a bit upon start-up - then it would clean-up not to be heard again, until next start-up days or weeks later. Also the last time I powered the unit on, the instantaneous distortion alarm triggered - so I shut it off. A minute later, I turned it back on, but the alarm (little amber light) was still on - so, I turned it off again and packed it for your shop.
Adcom GFA-565 Repair Service
Check out
Adcom GFA-565 Repair Service
Check out
Adcom GFA-565 Repair Service
Dead
Adcom GFA-565 Repair Service
Smoke came out of back right side of amp
Adcom GFA-565 Repair Service
Amp number 1 of 2, Loud Pop During Turn On and Off, Excess Heat,and Excess Voltage!
Adcom GFA-565 Repair Service
Amp number 2 of 2, Loud Pop During Turn On and Off, Excess Heat,and Excess Voltage!
Adcom GFA-565 Repair Service
I have 2 units I'm sending. This is unit 1 of 2. These units have .750 volts DC at the speaker terminals. It looks like one was repaired before as it has different caps installed and it looks clean.
Adcom GFA-565 Repair Service
I have 2 units I'm sending. This is unit 1 of 2. These units have .750 volts DC at the speaker terminals. It looks like one was repaired before as it has different caps installed and it looks clean.
Adcom GFA-565 Repair Service
UNIT 1 of 2.
I ahve 2 units that need reapir one has dc voltage of 1 to 2 volts DC on speaker terminals,the other has 25 volts DC on the speaker terminals.
please be advised ill be shipping from denver colorado and my return
Adcom GFA-565 Repair Service
UNIT 2 of 2.
I ahve 2 units that need reapir one has dc voltage of 1 to 2 volts DC on speaker terminals,the other has 25 volts DC on the speaker terminals.
please be advised ill be shipping from denver colorado and my return
Adcom GFA-565 Repair Service
Amp does not work. I believe it is the capacitors and there is a fish like smell and popping noise. Bill Kramek
Adcom GFA-565 Repair Service
Paul, Repair/reconditioning for the second Adcom amp. Still works but makes that "pop". Is just as "dirty" inside as the other. One question I have after seeing the list of parts for the first repair is their compatibility/similarity with the rest of the Adcom electronics or is my amps going to "sound " the same. I did blow the the B&W 802 drivers in one speaker so replacements are on the way therefore haven't "truly been able to listen to the repaired amp.
Adcom GFA-565 Repair Service
Distortion at all volume levels and I have DC Voltage across the speaker terminal outputs with no input signal. this leads me to believe I the capasitors have leaked onto the PCB.
Adcom GFA-565 Repair Service
Bought around ayear ago. He said he had not repaired And had took good care and worked exellent. It worked great in that time in my home theater for my polk center channel speaker. Distortion light came on and lost all power, I unplugged it.
Adcom GFA-565 Repair Service
EBAY
Adcom GFA-565 Repair Service
EBAY
Adcom GFA-565 Repair Service
i have two adcom 565 amps. Both amps were work fine until i started getting popping noise. When i look inside from the top, i see two green diodes on one amp on, but the other amp, the green diodes are not on. They both do not have sound at the inputs. I am hoping you can fix both. I will shipping one out this week, with the other to follow after i received the other back
Adcom GFA-565 Repair Service
i have two adcom 565 amps. Both amps were work fine until i started getting popping noise. When i look inside from the top, i see two green diodes on one amp on, but the other amp, the green diodes are not on. They both do not have sound at the inputs. I am hoping you can fix both. I will shipping one out this week, with the other to follow after i received the other back
Adcom GFA-565 Repair Service
Order 1 Serial Number: 940210499 Problems: -Large thump upon turn off, mass woofer movement upon turn off. -Loud hiss and buzz when powered on hooked up to speakers and preamp, but preamp not powered on.
Adcom GFA-565 Repair Service
Order 2 Serial Number: 940210474 Problems: -Gets warm when turned on hooked up to nothing else. -A hum from inside the amp when powered on. -Loud hiss, buzz, and hum (amplified from inside the amp) when powered on hooked up to speakers and preamp, but preamp not powered on. With preamp on, the hiss, buzz, and hum do not seem to change, even with volume change.
Adcom GFA-565 Repair Service
Serial No. 051216535 Loud POP when amp turned off
Adcom GFA-565 Repair Service
Serial No. 051216209 Sound distortion, noise, pops, especially when cold but now continuing; bad fishy or electrical smell.
Adcom GFA-565 Repair Service
loud pops on turn on.amp actually blew out speaker.
Adcom GFA-565 Repair Service
I have two GFA 565 units that need to be repaired. The first one has 70 volts of DC at the output and burned out a Woofer in my Infinity Delta/Gammas. The second one has nearly 2 volts DC at the output so is on it\'s way to doing the same as the first. Do you have price for the pair? Thanks, Don
Adcom GFA-565 Repair Service
I have two GFA 565 units that need to be repaired. The first one has 70 volts of DC at the output and burned out a Woofer in my Infinity Delta/Gammas. The second one has nearly 2 volts DC at the output so is on it\'s way to doing the same as the first. Do you have price for the pair? Thanks, Don
Adcom GFA-565 Repair Service
76.2 volts at speaker outputs.
Adcom GFA-565 Repair Service
Had contacted Paul earlier about this repair. Unit was suffering from bad capacitor issue and local shop was not able to fix.
Adcom GFA-565 Repair Service
Pops, smells and has some low frequency noise
Adcom GFA-565 Repair Service
76.2 volts at speaker outputs.
Adcom GFA-565 Repair Service
Dead
Adcom GFA-565 Repair Service
As mentioned to Paul, With speakers connected and each time I power on the amp I notice the woofer on the speaker sucks/pulls in even when there is no audio input. Also since I had amp since 1991 I would like the full service/tune up that you guys offer such as inspecting and repairing all parts that will be a problem down the road. I plan on keeping this amp for a long time so please take good care of her :) Thanks Regards, Matthew Bogardt
Adcom GFA-565 Repair Service
Amp melted the voice coil of the woofer in a Mirage M-790 tower. Took amp to Audio Service Specialists (Adcom authorized service center) in Tiffin IA. They diagnosed the leaking electrolytic caps & DC voltage at the output, but were unsuccessful in cleaning the board.
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