sound suddenly faint in old amp - easy to fix?

stinkpot · 16th May 2005, 01:11 AM

hi all,

i have the opportunity to buy an old nad 7000 amplifier. apparently, "has worked great untill recently, it may have blown a fuse or something, the sound is very faint." i've never really troubleshooted an amp before - does this sound just like a broken pot or something?

also, can anyone give me a guess as to what might be a reasonable price for this amp?

thanks!
-ld

gmphadte · 16th May 2005, 07:24 AM

Probably the power transistors are blown.
Do u know to test them...???

gajanan phadte

anatech · 16th May 2005, 09:50 PM

Hi stinkpot,
I don't think the outputs are blown if you can hear faint sound. Only testing will tell. See if there is an effects in/out or preamp in/out switch on the rear panel.

-Chris

16th May 2005, 01:11 AM	#1
stinkpot diyAudio Member Join Date: Apr 2005 Location: NYC	sound suddenly faint in old amp - easy to fix? hi all, i have the opportunity to buy an old nad 7000 amplifier. apparently, "has worked great untill recently, it may have blown a fuse or something, the sound is very faint." i've never really troubleshooted an amp before - does this sound just like a broken pot or something? also, can anyone give me a guess as to what might be a reasonable price for this amp? thanks! -ld

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16th May 2005, 07:24 AM	#2
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	Probably the power transistors are blown. Do u know to test them...??? gajanan phadte

16th May 2005, 09:50 PM	#3
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi stinkpot, I don't think the outputs are blown if you can hear faint sound. Only testing will tell. See if there is an effects in/out or preamp in/out switch on the rear panel. -Chris

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