Last night while watching hi-def hockey my Vizo GV47L FHDTV10A died on me. Screen went dark grey, sort of black, I could tell the back light was working but it was totally unresponsive, had to pull the power cord to shut it down. Waited a few minutes then plugged it up. The Vizio emblem lights up, the unit "clicks" when I press power on and then all the lights on the buttons light up and then that's it. The LCD stays completely dead and nothing works, I can't switch sources, I get no sound, it won't even shut off without pulling the plug. It's 13 months old today so I'm one month out of the 1 year warranty. I've called support, gotten a case # and faxed them my receipt. I'm waiting for a response from them about warranty coverage but I'm not expecting them to cover it since it is out of warranty now. I thought if I could reliably determine what part has gone out that I might try replacing the part myself. I think the backlight and LCD are ok, it sounds to me like the main board might be bad. Anyone out there had any experience with replacing parts in one of these TV's? I bought the service/repair manual from justmanuals.com and have complete part numbers for the set. Advice? Thank you!