I had a similar experience with a channel going out occasionally. It would actually come back on when I would walk near the amp and back off when I walked away. I swapped cables and still happened. Finally bought new cables and problem went away.
Loss of volume in right channel
I've noticed that my system is intermittently losing volume in the right channel. Usually starts out fine when the system is first turned on. Plays well for a while. And then the right channel will suddenly cut partially out (never a complete loss of volume). Then it will come back again. Also, I occasionally hear a sizzling noise in that channel.
I checked my source equipment, and the problem remains consistent with the right channel, so I'm pretty sure it's not my CD player (most often used source). Speakers are in good shape. Swapped pre-amp/amp cables, and problem remains the same, so it's not a cable problem. I'm thinking the problem is in the pre-amp, which has had a couple of "open" circuit problems in the past. Any thoughts ? Thanks.
I checked my source equipment, and the problem remains consistent with the right channel, so I'm pretty sure it's not my CD player (most often used source). Speakers are in good shape. Swapped pre-amp/amp cables, and problem remains the same, so it's not a cable problem. I'm thinking the problem is in the pre-amp, which has had a couple of "open" circuit problems in the past. Any thoughts ? Thanks.