can anyone help me? Is my hdtv dead? After playing xbox360 on hd with my tv for about 5-10 minutes, the tv just darkened and started flickering. Also i noticed a humming from the tv, even when the volume is down and my xbox is off, on every source. I turned off the tv for a while and turned it back on and it does the same thing. Does anyone know what is wrong? Thanks a lot! ....edit... also, i didnt play my 360 previously on this tv for at least 2 weeks with no problems...