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Nad c-370: Right Channel drops out

I took my NAD to a local repair shop to investigate why the right channel goes out on my amp and they proposed to charge me $420 to install a main amp kit, a filter set plus labor. Needless to say, I paid them their $70 "diagnostic fee" and brought the Nad home, unrepaired.

I am a bit baffled because I can get the right channel to come on if I tinker around with the amp by switching source inputs form CD to Video and so on. I have been reading on the internet about problems with these amps due to capacitors overheating and bugging out. Is there a particular capacitors or group of capacitors that I could replace myslef and get my rig running again?
tbone1
magfan
1,583 posts
 
Some audiophiles do an annual cleaning. Others will pull / clean connections and use contact stuff on 'em. I try to keep my gear is a dust resistant area, while still keeping warm running stuff cool.

Smoking and pets are deal breakers, for sure. Cats are the worlds only source for real cat hair.

Are the switches mechanical or electro/logic? I guess I gotta look up a picture of this amp!
tbone1 OP
20 posts
 
I am not sure what type of switches the amp has. I will try the cleaning this weekend and see what happens.

Surely more audiogoners have pets and smoke than what the for sale adds would leave you to believe...
loomisjohnson
1,941 posts
 
It's notable to me that (much like British cars)for all its positive qualities NAD simply isn't reliable as a brand--these forums are full of NAD gripes and problems. Thinking back, I've owned five or six NAD pieces (amps and sources); all but one had issues. Correspondingly, comparably positioned gear from rivals like Rotel and Integra seems indestrutible.
magfan
1,583 posts
 
My 1 bit of NAD ownership was troublefree for 2 decades. The piece? An old 1700 tuner/preamp.
It worked without complaint, even the remote, until the day I gave it to charity.
Prospective buyers wanted it for the phono section which I broke by doing a quick disconnect (ZAPP!)
But that was not NAD's fault. Mine entirely.

Did NAD's quality take a hit when they went Chinese? / Asian? Where were they constructed in the 70's / 80's / 90's???
ddd1
261 posts
 
After cleaning:

Try plugging the CD player into another input.

Check the jumpers just in case and if you are using the level controlled pre outs on the back, try the fixed ones instead.

Consider using a sheltered equipment rack and some routine cleaning maintenance to keep out the smoke and pet hair.
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