I have troubleshooted by doing a power reset. Tried with other external inputs and also changed power outlets. On black colored images, green dots are clearly visible on screen. They are static and distributed uniformly all over the screen.
According to your observation we called abnormal picture & common mode choke coils are defective l3000,whech are near to LVDS connecter there are 3 coils & must change all coils after replacing these coils your set will ok
SOURCE: Sony 61" lcd has bluish spots in screen, any ideas?
Hello, inside the set there is an optical unit with 3LCD panels. Somehow the dust particles came into your set and now the dust is all over the optical unit and 3LCD panels. Only way to solve this issue is to clean the dust. Please contact your Sony dealer. Best regards, Arpi
SOURCE: Too much green color
Problem solved. I tried playing DVD and the TV picture was fine. So I double-checked cable wires from cable box - one of the wires was loose (obviously it was the red color input). After tightening, the TV picture is good as new.
SOURCE: green pixel lines
It sounds like a bad LCD panel but you would have to post a picture of the problem for me to be sure
SOURCE: Sony Bravia No signal plus flickering image and
You know how to reset the tv to its factory setting, I think you are a technician. Second thing you can do is software update. Go to http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30 . If it doesn’t work. Replace the Main board (UB board). Part # A-1547-086-A Cost approx $320.
Knowledge obtain from: Repair experience on same symptom.
Parts reference: Andrews electronics, 800 289 0300.
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