White halo fuzzes the picture on TV

I have a 65in Mitsubishi 1080P projection tv. The picture is decent, however there is a white glow that I can't get to go away. It is worse when there is any type of script on the screen. For example, a logo for a phone number will have a white haze around it. Mostly the lighter colors on the screen have this problem. I've tried adjusting th brightness and contrast, but that seems to have no affect on it.