The cause may be from strong magnetic pull from speakers or other electrical devices, or from age. there are fine adjustments on the inside of your projection television. there are three basic colors. red, yellow, and green (yellow and blue). unless your electrronic savvy you must be very careful adjusting your set. one wrong turn will cause the other colors to adjust out. and one wrong touch while on the inside can severly injure or kill you. but if you are going to try find the three small knobs located on inside unit by projection unit. in small increments adjust one knob at a time until you find the appropriate one. pull it back in line and reassemble unit.you dont feel comfortable dong this please take it to a tv repair shop.Hope this helps:)
You will need to replace your two convergence I.C.s.They are two large ICs mounted on a large aluminum heat sink. Replace both, and look for any burned resistors near them and replace those if needed,and then readjust your convergence.
That sounds like a convergence Ic problem, please see this page
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Also take a look in the BEFORE and AFTER pictures to make sure if this is the problem your having.
Let me know if you need anything else.
Thanks,
Ekse
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