Zenith PVY5263DT Projection TV has no picture....HELP....

[alam8]

I have Zenith PVY5263DT projection TV which is having a picture display problem. Picture shrinks on the top and bottom of the screen. Left and right side of the screen is ok. sound is fine. Can not display menu either from remote or at the TV set.
Any idea is to what could be wrong? I could not find any obvious loose solder or connection on the front circuit nor do I find any burn marks for possible burned out components.
Also, some one knows the service code for it? I tried 9876 and 999 without any luck. A service manual or schametic would also help.