Question about Adcom GFA-7500 5-Channel Amplifier

Open Question

GFA-7500 A751 FB 03670. THe problem is that one of the rear surround outputs is dead. I have a great 4 channel amp!! I am in MN. Ultimate Electronics will not be bothered with my problem. So "expects" please give options, hopely a few on the best way to repair this fine old AMP. I hope you will share your wisdom and advice ASAP!!!! Thanks in advance. Mike in MN. Mlaughlin54@;hotmail.com

Posted by on

Ad

3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
petraman7
  • 1175 Answers

SOURCE: Adcom GFA-7400 power amp; 1 dead channel (thermal protect LED on)

Hi...

I've contacted ADCOM before and they sent a pdf of the electricals

http://www.adcom.com/default.aspx

also try:

www.stereomanuals.com

Posted on Apr 17, 2010

Ad
  • 119 Answers

SOURCE: is a Adcom GFA-7500 5

no this AMP is not bridgable to get more power out of this amp you need 4 ohm speakers.

Power rating
1 - 150 watts into 8 ohm speakers
1 - 225 watts into 4 ohm speakers

Posted on Feb 23, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Adcom gfa 7000 amp makes a cyclic humming noise in unit not in speaker


Are your grounds to BARE metal sounds like a ground loop issue.

Feb 25, 2013 | Adcom GFA-7500 5-Channel Amplifier

1 Answer

Adcom GFA 7500 problems


My right channel went out on my GFA 7500 and the problem was TWO blown internal fuses. Each amplifier inside the GFA 7500 has two fuses. In order to get to the fuses you must first take the top of the amplifier off by removing the screws using an allen wrench. Then put the top back on.Turn the amplifier over and remove most of the screws from the bottom to access the fuses in the bottom of the amplifier. There are two different size allen wrenches on the bottom. Be careful to not drop a screw inside the amp and make sure you line up the screw holes that hold the amps using a small screw driver to push the amps into position. I replaced all the fuses on the top and the bottom. AdCom sells the fuses on their site.

Jun 11, 2012 | Adcom GFA-7500 5-Channel Amplifier

1 Answer

I am looking for the fuses on an Adcom GFA 7807. The amp has no output on some of the channels.


Fuses aren't channel-specific; it's all on or all dead fuse-wise. Maybe you have dead / improperly connected speakers, source connection issues. Track it back or swap source channels and speakers to isolate.

Jul 24, 2011 | Audio Players & Recorders

1 Answer

Is a Adcom GFA-7500 5 channel power amplifier bridgable?


no this AMP is not bridgable to get more power out of this amp you need 4 ohm speakers.

Power rating
1 - 150 watts into 8 ohm speakers
1 - 225 watts into 4 ohm speakers

Feb 23, 2011 | Adcom GFA-7500 5-Channel Amplifier

1 Answer

Adcom GFA-7400 power amp; 1 dead channel (thermal protect LED on)


Hi...

I've contacted ADCOM before and they sent a pdf of the electricals

http://www.adcom.com/default.aspx

also try:

www.stereomanuals.com

Mar 30, 2010 | Adcom GFA-7400 5-Channel Amplifier

1 Answer

I have a vintage Kenwood amplifier (two channel rear speakers, 4 channel front / satellite) with Dolby Surround. It is circa '98 or so. I just moved it and now the right channel of the rear speakers seems...


I can't provide specifics without the model number, but ingeneral, the amp section for the rear speaker could be defective or the output relay could be the problem. Without knowing the deisng, I can not say for sure. Typically, the units of that vintage, use ICs for the surround amps. Some use a single IC for both channels, some uise 1 per channel. If you can update this with the model number, I can get you more specifics and perhaps a repair cost estimate.

Thanks,
Dan

Nov 24, 2009 | Kenwood Audio Players & Recorders

1 Answer

I turn on the ADCOM GFA-5802 amplifier... ...The power light comes on, but does not heat up nor output sound


Have it serviced. Do you know what GFA stands for. People at Adcom do have a great sense of humor. Take it only to a high end audio servicer. Contact Adcom. This is good stuff you wouldn't want a hack working on it.

Nov 23, 2009 | Adcom GFA-5802 2-Channel Amplifier

1 Answer

Adcom 7500, Adcom 5400(bi-amp), Marantz AV-9000, Dakiom HA103


Try just the power amp on ..nothing connected
no Dakiom thingy either. It's a matter of elimination. Start at the output device and work back. Keep the Dakiom out of the loop.
If there's hum with just the Adcom..then it's the ADCOM

Mar 25, 2009 | Adcom GFA-7500 5-Channel Amplifier

1 Answer

ADCOM GFA7500 problem


I don't have experience with the 7500 but I had a 7000 with multiple bad channels (red light lit). The problem was bad filter capacitors on the amplifier boards. The large black filter caps (two per channel) were leaking on every amp board. Its a relatively easy repair if you can solder.

FYI you'll probably need a set of small hex head drivers to open the unit.

Feb 21, 2009 | Adcom GFA-7500 5-Channel Amplifier

4 Answers

ADCOM GFA 5802 POWER AMP NO SOUND, BUT POWERS UP.


Remove the output transistors and measure each of the sets of 3 pads and report the voltage readings here. I suspect that you have either a blown driver circuit or output transistors. The voltage readings will give me an idea on where to start looking for specifics.

Thanks,
Dan

Nov 11, 2008 | Adcom GFA-5802 2-Channel Amplifier

Not finding what you are looking for?
Adcom GFA-7500 5-Channel Amplifier Logo

Related Topics:

85 people viewed this question

Ask a Question

Usually answered in minutes!

Top Adcom Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5158 Answers

Computer Links

Level 3 Expert

2385 Answers

Greg Cann
Greg Cann

Level 3 Expert

1114 Answers

Are you an Adcom Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...