I have a 2 month old Sony HD TV, hooked up to a Yamaha RX 2600 and an HD Tivo. Recently, I've been getting a greenish "halo" maybe 6-8 inches thick around the perimeter of the picture. Tonight it was bluish. It usually went away if I turned the TV off then on. Tonight I had to leave the TV off for> 30 seconds to get rid of the bluish halo. I love the TV, and would hate to have to take it to a rapair station. It took three strong people to lift it onto a three foot stand! Any idea what's going on?? Thanks