Anyone have this kind of problem with their amp?


I own a Classe CAP-101 integrated amp that I bought used about 10+ years ago.  Recently, it's developed a problem where the right output channel doesn't operate.  Sometimes, the amp works just fine.  But at other times, the right channel won't operate when I power up.  At still other times, there's no issue when I power up, but the right channel will stop working after a variable period of time, sometimes ten minutes and sometimes thirty or even more.  Occasionally but not frequently, after the channel has stopped working, it will resume working after a while, continue to work for a time but then may revert to not working.  When the channel stops working, turning the amp off and restarting it, and/or unplugging and replugging it, does not restore operability.  I've checked and re-checked my connections (bare wire) without any effect  

It's not my other equipment, because I've inserted another integrated without any issue.

I've taken it to a repair shop but the tech couldn't replicate the problem, so he couldn't diagnose it.

In the past, when I've contacted Classe customer support by email about a previous issue or with a question, I've never even gotten a reply.

Any thoughts/advice?  Thanks in advance.

Jim
jimcrane
Jim, I've no helpful suggestions, but had that identical problem with my Phase Linear 4000 Preamp's right channel off and on for over forty years. I took it to three different repairman over that time, and even back to the Phase Linear factory, which was located outside Seattle back in the eighties, not too far from home then. None of them could find or engineer a permanent solution to whatever the problem was.

A bunch of replacement caps helped it keep going for a while the last time around. The final solution came last year in the form of a dumpster. I gave away the matching Phase 400 amp, which was still going strong and never a moments trouble. I wish you the best of luck finding a better solution in a much shorter amount of time.

Mike
Any thoughts/advice?  Thanks in advance.

My first thought is that inserting an integrated does not prove that the preamp is not at fault, or a wire, or a connection.  Unless, you used the integrated as a pre-amp and it has pre-amp out RCAs....

EBM. Sure. That's exactly what he should do. Maybe you could buy him a new one, the rich audiophile that you are.....