Green screen The TV was left on overnight and now the image projected is too yellow/green

Video processor could be locked up do to a small power surge, leave the set unpluged for 40Min, and it will reset back to normal, if it don't then you might have a CRT neck baord that shorted out on the green gun.

You have a convergence problem.On this model you can change the convergence amp board which has the convergence IC's on it making it an easy repair.

conv ics

Replace both of your STK convergence ICs will have part number on them also ck pico fuses around ICs they will look green or yellow like resistors, but are Fuses.STK392-110 example.

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 more information and a DIY convergenece repair kit with instructions from the link 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 using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Always start at the vary center of the screen with Green. Position Red over Green, then Blue over what now will look yellow. If all is perfect except the outside, you will need to adjust "Mid-Size" until the middle is just as far off as the outside lines. Then adjust the main "Size" adustments to match. Go very slow or you can make a mess of it.

well there migt be problem in the screen,,
i advise u to contact the service repairman asap

you have bad connections on convergance ic solder them if that does not fix then replace them

call tech ..suggest screen adj.

Many Sony LCD projection TV's have a problem with optic block failures and your description is exactly what happens. Picture starts turning yellow or green and blotches of yellow or green. Many Sony model have an extended manufacture warranty on these optic blocks and if you get me the model and serial # of your unit I can provide more info.