Question about Sony Grand WEGA KDF-60WF655 60" Rear Projection HDTV

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Blue stars on screen

My sony -according to sony needs an optical block-light engine

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  • danilo dabu Nov 11, 2008

    It all started with one blue dot and now it's all over the screen plus 2 inch light blue color on the lower left of the screen showed up.

  • drj93 Dec 19, 2008

    problem started about a month ago with three stars - after a couple weeks there were hundreds - contacted sony as advised by this site - repair guy came yesterday and replaced the light engine - no charge - tv like new -- the extended warrant runs out in a few days - 12/31/08 - if you have this problem you should hurry - thanks soooo much -- Don Jones -

  • jjrrhino Jan 22, 2009

    I had the same problem......I just called Sony support at 1-800-222-7669 and was able to get them to fix the issue even though the limited warranty had expired....they had offered me 2 options...1) get it fixed or 2) buy a new tv at about 1/2 price...$2500 for $1300 or $2000 for $1000.....I went with just the fix



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Sony has extended the warranty for this problem until December 2008, so act quickly to get it repaired. You can find information on getting service here:

Be sure to rate this solution. Thanks!

Posted on Nov 13, 2008


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I have tiny blue dots on my tv screeb & at the bottom of screen is like a shallow blue.i own a sony kdf-42we655 i had it for around 5 years. Help

this is the information I received

This blue dots problem is due to defective blue lcd and related uv filters/ polarizers in optic block (light engine) and optic block will be replace to fis that issue.
It would be costly fix and an experienced tech is needed to do the job. You can expect $1000 repair cost.

Jun 12, 2010 | Sony KDF-42WE655 Television

1 Answer

What do i need to fix this "blue Blob" so everyone is calling it. it looks like my screen is broke but i know better

You would need an Optical Block
SONY P/N A-1084-660-A
LIST PRICE $ 552.39
CORE CHARGE $1,060.00
(I'd be really sure to return that old one to get that core chrg back)

(very complicated)
You would need to know how to dissasemble a sony lcd optical block (and put it back together).


Obtain the correct polarization filter for the blue optical path.


There is no damage to the blue LCD panel yet(one symtom is blue dots like stars in the pic).

Oct 20, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Blue dots and streaks

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.

Oct 05, 2009 | Sony Grand WEGA KDF-60XS955 60" Rear...

1 Answer

I have a large blue bar and blue specks on the picture

If it looks like a "star field" blue with white specks it is the light engine. Sony has extened the warranty on may of theses sets call an authorized sony service center and see if the optical block i still in waranty. I would to this asap as most of these extended waranties are running out!

Aug 26, 2009 | Sony Grand WEGA KF60XBR800 60" Rear...

3 Answers

Sony Grand WEGA KF50WE610 50 blue hue blue dots

This model also has a paper filter for the Optic block that should be changed. No one ever said anything about it. shortens the life of the optic block if not changed.

Aug 15, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Blue haze in picture

Sorry guys the news is not good. The Optics or light engine must be changed or rebuilt. The lamp has destroyed a filter (glass element) inside. You must remove the optics and send it out to be rebuilt. Not a do it yourself type repair.

Apr 02, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Sony Grand Wega 60WF655 TV blue tint/spots

sounds like your optical block lenses has melted due to heat.
( common problem) here is the light engine/optical block number


Mar 18, 2009 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Blue streak at bottem of screen


You have the classic "blue blobs," In most of Sony's rear projection LCD's, the Optical block is bad. Manufacturer's defect. The blue panel inside of the optical block starts de-laminating (due to heat from the lamp). This is a very common problem. I have changed about 70-80 optical blocks myself over the course of about 4 years.

There is no other fix but to replace the optical block. Unfortunately, it will get worse, and will probably develop "stars," or stuck pixels, as well. You can call Sony and try to get some assistance, but the extended warranty on these sets has recently expired.

Hope this helps you in some way...

Jan 04, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Bad picture

Sony wega blue dot or star pattern on screen
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

Jan 19, 2008 | Sony Grand WEGA KF50WE610 50" Rear...

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