Three times recently I've turned on my RX-V1 and gotten no sound out of it. It turns on, the video switching works, and it is processing digital signals, but it won't pass any sound to the amps. However, if I switch to the 5.1 input, I will get sound from that. Each time this has happened, I've switched it on and off, changed inputs, unplugged it, tried unplugging different inputs, speakers, etc., and while it has come back to life I haven't figured out what the cause was. So it seems like a faulty DSP board. I don't think its a short in any of the cables, because once it came back on after I cycled the power. Also, it worked perfectly fine one night, and absolutely nothing had been touched when I turned it on last night. So I'm wondering if anyone is familiar with this problem? I dread having to take it in to the shop because it will probably take weeks to get it back. Plus since its intermittent I'd like to know if its a known issue. I'd hate to take it in some place, have sit there for a week or two, then find out they did nothing because they couldn't reproduce the problem.