Thats crazy man, it is def not something you can fix, a tech will need to look at it.

Since you say it is a Rear Projection TV, I am guessing it is a CRT TV meaning it is using a type of vacuum tube and a magnifying glass to create your picture. If one of the 3 becomes out of line then the magnifying glass could act as a it would like burning an ant with one. I would call the manufacture and see what they can do.

Check this out if you wanna know more about the CRT
http://hometheater.about.com/cs/tele...arearprotv.htm