The most likely cause is shorted convergence chips and possibly a few pico fuses.
These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the
picture to look normal. This is called convergence.
When its out of alignment the video will look
3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection
TV sets including Sony,
Samsung,JVC,Philip Magnavox,Panasonic,Akai,
Pioneer
Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.
Here are some of the most common problems with these sets...
Problem #1) Convergence
Yours may have one or more of the following symptoms...
*Screen Looks
3-D *Colors wont align
*Screen may look distorted or warped
*No Audio/Video -
TV Shuts down - May also make a constant chirping sound
Problem #2
Another common problem is dull or washed out video.
Your set may have one or more of the following symptoms....
*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture
You can see some more examples and find a fix here
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
Hitachi,Mitsubishi,Zenith and others. 
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
259638 search the web for the part.
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