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Fix or Scrap - Old Adcom Amplifier

post #1 of 5
3/18/10 at 6:05am
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I have an Adcom GFA-II amplifier. The sound is scratchy so I assume I need new caps.

Currently I have an NAD T741 Receiver driving a 5.1 setups. I don't have lots to spend so I was thinking I would fix the amplifier and use it to drive the fronts (B&W DM600's) while using the NAD for the Center and Surrounds.

I am currently using the NAD for all channels and it is OK. But I would benefit from more power, especially for 2 channel music listening.

Is it worth fixing this old amp? Has basic amplifier technology chnaged that much?
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post #2 of 5
3/18/10 at 6:43am
a new ADCOM GFA-5400 is currently $500 and repairs to your much older unit will probably run 1/2 of that, if ADCOM or a local tech will even attempt to do the repairs.

And an Emotiva EPA-3 to power all of your "front 3" is $600

Tough choice
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post #3 of 5
3/18/10 at 9:44am
I'd take it to my local handy dandy electronics repair shop and get an estimate.

I have had some amps repaird cheap. Others not so cheap. Even whem major repairs were needed. I used to do all this type of repairs myself, but I am getting older and always have to many other prority projects going on to devote any time to it.
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post #4 of 5
3/18/10 at 9:46am
If you decide to scrap it, I'll pay the shipping to my house.
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post #5 of 5
3/18/10 at 11:38am
These may be fairly expensive.

http://www.angelfire.com/art2/stereorepair117/adcom.htm

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


There are diy forums (audio karma, etc) that cover certain aspects of recapping, etc older amplifier sections. You would need a service manual.
Electrolytic capacitors are known to deteriorate slowly.
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