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Those Rear LCD TVs get bad light engine on some. Causes fuzzy spots size of quarter. Or sharp small bright spots looks like road map or 'stars'. Need new/rebuilt light engine.
You could possibly be dealing with a failing LCD panel. I've seen many of the dark spots in Samsung sets and it's due to defective LCD panel tabs. The only true fix is the replace the panel which would cost more than a new TV !!!
catually is problum is related with blue lcd & blue polizer but first you clean the optical unit if the problum gon then ok other wise must chang blue lcd & blue polorize with uv filter plese contect to your nearst sony service centre
It could be a cob web inside the tv or something laying on one of the guns, like a dead bug. If it's a cob web, you should be able to move the tv a little side to side and see it change from the moving air current. I would remove the back and vacuum off the lenses of the guns and look for cob webs. It's safe to touch and clean the lenses, just don't touch any electronics.If this doesn't fix it, it's probably fluid starting to cloud up in the guns or IC chip problems.
Tiny particles of dust on the light engine lens can cause this (and was a service call for me about a month ago), or possibly the expensive light engine.
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