Hi, like the title says, my tantrum 400.4 has a channel that just goes out randomly. It goes out when the music is loud or soft or on pause, doesn't matter. The length of time it's out varies and sometimes it will go for a week without going out.
So, any ideas? How much to repair something like that and is there someone here who can do it? I love the amp and hope I can get it back to pleasing me.