I plan on pulling of the back cover today to see if any caps in the PS are bulging. Maybe check with an ESR meter as well. As far as sound, the sound went out shortly after I bought the TV a good 5 or more years ago but since I have surround sound, I never bothered to do anything about it. The set is very heavy and requires 2 people to move it.

If this is an ESR capacitor problem, does heating the caps up cause ESR to lower?