2. amps-preamps
  3. 1161101899

Adcom GFA-565 Capacitor Replacement

I own two Adcom GFA-565 mono amps. One began to thump while in use, so I brought both to an authorized service center. Tech tells me that he is finding DC across speaker leads on both amps, and that oversize capacitors need replacing and that he thinks Adcom no longer makes them. I asked for alternatives, he said "they make great anchors". Is there a place I can obtain original or acceptable substitutes for the capacitors? THANKS!
schmengie_mcs7750
hhiggins's avatar
Ag insider logo xs@2x
hhiggins
66 posts
 
power supply caps might need to be electrolytic(???)(@30,000uf might be hard to find in a film cap & a bit pricey)
gregm
3,397 posts
 
Pauly sez:
Get film caps rather than electrolytic ...
Come on, Paul, tsk, tsk. Lytics are fine, same mF, higher/same voltage as noted.
Couple ("bypass")with suitable films if needed.
Easy to diy -- BUT if in doubt, go to technician.
Cheers
reubent
6,942 posts
 
I think I would try contacting Adcom directly. Try one of the links off of their sebsite. Here ya go:

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

Enjoy,

TIC
aball
2,016 posts
 
It has to be electrolytic for the main power supply caps. Easy $5 job to do yourself if you are adventurous.
pauly
1,012 posts
 
Greg sez

“Come on, Paul, tsk, tsk. Lytics are fine”

I thought this was an “audiophile” forum ;-)

“Easy to diy -- BUT if in doubt, go to technician.”

The tech is telling him “boat anchors” remember? Best stay far away from that tech – sounds like a shady character.

“It has to be electrolytic for the main power supply caps”

Nope – I used motor run caps in power supplies and they are the bomb. For the adcom there prolly won’t be enough space to go this route though.
More to discover