If you have blue spots in your picture on a sony grand wega you have a defectie optical light engine. The best solution is to contact sony and regardless of age , i beleive they covering this under warranty due to current lawsuit they are going through. Their customer service number is probably in the back of the customer instruction manual.
U have bad optical block problem , this reapair is very xpenceve
SOURCE: Blue dots on screen and
i have found one reference of his occuring with what is known a faulty LVDS cables. inside the set their are cables that take the signal from the main board to optical block. they look kinda like computer monitor cables. you might try reseating these cables first. the notes i found said that replacing the cables fixed the problem...something to try good luck
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