I have read and tried all the supposed, possible ways of curing this annoyance. From the simple possibilities (Such as switching out HDMI cables, trying the other HDMI input, restarting the console using the Y and right trigger, disabling the display thing, etc.) to the bigger ones, none seem to work. My TV is a Sharp Aquos HD TV, with two HDMI inputs. I was playing a game on my console and shut it off abruptly, but I got back online in about 20 mins and everything was working except the audio. Any advice would much appreciated, thanks.