Right channel cuts out Please Help

Rtilbury,

Forgive the stupidity in my previous response. I read later that you DID swap your source component. Whoopsy!

Have you considered checking the "quiescent current" of the amp or put another way the voltgage of the amp when not driven by any source? I've tried setting to to specifications and it worked. A final thought: CLEAN EVERYTHING! Make sure all connections are clean. (This may sound crazy, but I've found fibers and other material in the female IEC end of a power cord that I cleaned by a blast of air from a simple computer keyboard cleaner I bought at Staples. So make sure all oxidation is removed from the contacts and shoot a blast of air at all places that might accumulate the same kind of material that always winds up in one's navel.)

I have similar problem . I opened up the amp and realise that the input is connected to teh amp board via a short signal wire which have plugs on both ends. By applying some force on the wire and the connection, i can simulate the problems. Later, i decide to tighten the plug by pushing it in snugly and the problems never return.
I think this is a "poor" design as most amp will have the input directly soldered point-to point to the amp stage.

By the way, I do have a buzz problems. I tried many ways and i am convinced that ground loop is the culprit though i cant really totally eliminate it. The key thing is to float your CD powercord; remove the ground and see what happen.

Hope this helps !