Overall green tinge on Sony KDS-R50XBR1 50 - changing picture, color, etc. does not fix problem

If the screen has a yellow green color to the whole or most of the screen in this model it may be a defective optical light engine.

A photo posted here of the issue or elsewhere might tell me.

I have found this in the owners manual which is adjustment to grey scale when there a green ting. this may help. White Balance page 36
Color Temp 4 settings page 35
Iris Settings page 34

The problem is the optical block and nothing else but. Contact the dealer from which you purchased the set to see if you qualify for Sony's extended warranty on this very, very expensive part, which may be covered by a class action lawsuit Check here http://esupport.sony.com/US/perl/news-item.pl?news_id=367&mdl=KDS60A2020 The lawsuit covers all the KDS models. It seems that Sony continued making these rear projections even though it knew the optical block failed prematurely. When you get it fixed, go to setup and make sure the cooling fan is on HIGH and power saving is ON. Both of those features will extend your TV's life, including the optical block and the projection lamp. Further, bring a portable compressed air tank to the TV and, with a narrow nozzle, empty it into every opening in the set's back. At least once per month, check for dust settling on the rear of the stand behind the TV -- when it gets thick, get the air tank.

Sounds like a light engine problem.Theres 3 lcd color chips in there that create the color.One of these has gone bad.You might find a light engine at discount-merchant.com

Call sony. They have extended the warranty on this model till june 2010 to repair the optical block.

The optical block is failing. Contact SONY for a replacement. They have extended the warranty or replace the sets

Went to site http;//esupport sony.com/sxrdsettlement and found out Sony has to replace the optical block which cause the picture to have too much green. You have till June 30,2009 to get it fix.

http://www.breakitdownblog.com/class-action-lawsuit-against-sony-for-green-haze-or-green-blob-sxrd-problem/

You have a bad optical block. Sony is covering the optical block replacement under warranty, so you will not have to pay anything for the repair. Contact Sony customer service at 800-222-7669 to arrange to have your set serviced.

There is an extended warranty on the optical block which is causing your problem. Contact Sony directly at 800-222-SONY to arrange to have a technician look at the TV and have the optical block replaced. Sony is covering parts and labor for this repair. For more information visit the Sony website