55 inch Philips

I have a 55 inch Philips rear projection tv. I was watching it yesterday, when all of a sudden there was a red/green wave going across the top and everything was shadowed. What is wrong and how do I fix it?

I have 50" philips magnavox big screen. I recently started to have a problem with the edges of my tv. They became blurry. the center of the tv is clear and the edges are blurry. what should I do to fix this problem.