Optic block

Used in LCD and DLP type projection TV's to hold all the optical stuff that creates, focuses, and projects the image onto the screen. These TVs are much like a regular video projector except all folded up to fit it into the space of a TV. They are generally not repairable, are prone to get overheated, warping the plastic optical cavity housing and distorting the picture. Very expensive to replace as a result, usually over a $1000 and why you want to keep one of these TVs under warranty for its entire life.