H E L P !!! I was watching a DVD this afternoon when an hour or so into it the sound died on me and I haven't been able to get it back. I tried various surround modes and can't get any sound. I've also unplugged everything and plugged it all back in, turned it off for 10 mins etc etc. After a few hours of trying everything I can think of, this is what I can get: I can only get sound from analogue sources but in "Direct" stereo only. This applies to CDs, TV and tuner. If I switch to a surround mode for either digital or analogue signals, I just get sort fluctuating humming noise. When I switch between different inputs I get a loud crackle and then that horrible low humming sound which goes up and down. I've been through the menus and all the settings are exactly as they were. And there is no test tone either, just that humming sound again. It's very strange as I can play my CDs (via the DAC connected to the CD inputs on the AVR300) and there is perfect sound (only in stereo "Direct" though) with even the sub being engaged. PLEASE HELP !! What has happened to my surround sound?