QUOTE(soulinertia @ Jun 9 2009, 04:06 PM)

Same thing just happened to me last night! Blurry dim colors right in the middle of a game, then it went grayscale. I turned off the console and when I turned it back on - no signal.

No audio, no video. Please someone help. I was using standard A/V cables. Can this be fixed?
HEY THERE i got a fix for you!
the same shit happened to me, EXACTLY THE SAME DUDE (i tried fkin everything, even the Y + RT trick, with no results). I called microsoft and they said my video card was ruined. SO i said no thanks to the 140$ fix and thought to get a red ring of death so i would be covered by warranty (not a good idea). my last hope was gone and I said to myself... LET'S DO IT
so i put it in my BIG winter blanket so it could overheat. i did that for 25 minutes (without hard drive or DVD) and waited until it was pretty hot.
then i waited 10 minutes to cool a bit
Then i plugged it in, and my xbox ventilators were going crazy because of all the previous heat. i had to resync my controller 3 times (i don't know why, maybe part of the fix, who knows) until my tv got FINALLY the signal
BUT it was all weird and looking the same as before it went off (like green stuff everywhere and blurry i dont know), so i got to display settings, and put my xbox in "best settings for my tv" and thant in "1080P" mode (even if my tv is 720P) and my tv got reset at the same time as my xbox and everything worked like before!!!

i don't know if I went lucky or it's a real fix but... it WORKED!!!
what do you have to lose? i had 140$ to lose, so i did it. but if you are covered, don't try it.
PS: i will test if its a permanent fix, and give news about it.