I have a 60" Zenith LCD rear projection TV and have noticed that I am getting a blue blotch in the lower right hand corner no matter what channel I am watching. For example if I watch a golf tourney the grass in that area will look blue or if the screen is completely black that part is blue. What is causing this (it seems to spreading the longer the TV is on) and is there any way to fix it?
Thanks.

Do I need calibrate?

did you fix the problem ?