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Bad Light Engine,also called Optics unit Block- (Part Number A-1084-666-A)
Encompass Parts Distrbution 1-800-638-3328 $779.55 After Refund for exchange on old Part.
PTS 1-800-844-7871 This Company might have better Price for Light Engine-Rebuilt
Blue streaks might have been just your video connection and problem with signaling. But, blue dots is faulty light engine, aka "optical block". The engine in this could be a defective LCD array. Very expensive, a optical block is about $850. Hope it's still under warranty. You could get a rebuilt one, possibly. Need service adjustment too. Bad problem that Sony has with these kinds of sets.
Sony wega blue dot or star pattern on screen http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655 Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620 Sony LCD Rear Projection TV - Optical Block Problems
The Blue dots or discolouration you are seeing is due too the Blue LCD screen having cracked from excessive heat. This normally happens when you have a power failure while the Television was on. This obviously because the Blue LCD sits next to the lamp - the main cause of heat. The correct part number on the 60" is A-1086-952-A. It is very, very ,expensive.
Sorry to have been the bearer of bad news. Good luck : )
It might be just dust somewhere in the light path to the LCD panels or on them. The only other thing that comes to mind is the light engine itself and that is no easy task to replace. The part number for it is A-1084-666-A
and can run close to 1000.00 for the part. Can you post a picture of the issue so I can look at it?