Question about NAD C370 2-Channel Amplifier
It is most probably a dirty speaker protection relay. gently tap the relay(the one that engages shortly after turning the amp on) when the fault is occurring and see audio returns. This should ascertain the problem. Replace it if it is a sealed type, or if it has a "lid" you can get off, burnish the contacts with a white business card, and give it a spray with contact cleaner/lubricant. Good luck and a "fixYa" rating would be great for my profile :)
Posted on Feb 06, 2008
The relays are the culprit(s). I've owned several of these NAD amps. a 2200PE power amp, a 7400 receiver, a 5150 integrated amp, and a 2600 monitor series power amp. They all, with the exception of the 5150 which doesn't seem to have relays, have had the speaker /ouput section protect relays go bad. My 7400 is due again too. I used to sell this brand in college, and we'd see many of them come back after about 5-10 years with this problem. Very common.
Posted on Aug 17, 2008
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