Any sony expert?? i need help to find out problem - KV 20S20

[Guest]

hi friends,
i have SONY KV- 20S20 Television
since few days the problem occurs, all colors are excellent except white color
when white color display the the green shadow also appear with all out lines of white image. the green shadow is really too noticeable, u can see all white color is covered by green
it only happans in white color, and only green color shadow,
pls guide me what should i do??
( i cheak there is no any preset for green cathod ( as well no any preset in whole circuit board) i can't

thanks to all of u