Check out the large capicitors on the board. They can go bad in under 5 years. The electrolite dries up and then the con't "capicit"or anything else... One of my TV tech friends taught me that and I've repaired three TV's this way. $10 in caps and some time might... might, save the trip to the TV hospital. (Just make sure all of the caps are drained, and not by shorting them out which can damage the delicate IC's inside.)
