Whats wrong with my projector?

[Chunky Char]

I have a Sharp XG-P20XU projector. Just yesterday I noticed a discoloration in the projected picture. At the top of the picture, there is an area shaped like a "V" that is discolored. For example, if the color of the picture showing is supposed to be black, there will be a slightly purple V showing in the middle of the screen. Does anyone have any idea what this could be? I purchased the projector used, it has about 320 hrs on the lamp. Its a really bright projector, about 3300 ANSI, so I wasnt sure if this had something to do with it? Or could it be possible that it could just use a good cleaning? Please help. Thanks.

[lee b]

if its an lcd projector the chip has been slightly burned maybe from leaving a picture paused or a games console paused for some time.it may clear itself or you could try leaving it on a black screen image or bright white image for an hour