Call Sony,there is a extended warranty on your tv,the optical Block is the problem,they will fix it for free or offer you a upgrade to a lcd flat panel for 700.00,
I just replaced the bulb - very easy to do. But now I'm noticing a bluish/white circle in the middle of the screen..on black and white old movies. You can also faintly and I do mean faintly the discolored center on color. Could I have installed the bulb incorrectly? Thanks for any help you might provide.