Question about Sony KDF-E42A10 42 in. LCD Television

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Not a problem - just clarification

I have seen references to "optical blocks" and "light engines" when discussing problems with Sony LCDs.
Are these just two different names for the same component, or is the optical block part of the light engine?
Thanks

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They are the same part. Sony reffers to it as the optical block, while other manufacturers call it the light engine.

Posted on May 21, 2009

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1 Answer

Blue dots in screen . does that mean the lamp is going ?


Hello

I dont know of a good way to tell people bad news. The problem with the blue dots is expensive. A part called the optical block is failing. In general, the optical block takes the red green and blue pictures from the little lcd screens and puts everything togther perfectly. This requires several mirrors, filters, lcds, and parts that I dont even know the names of.

Buying a brand new optical block is a 1000 to 3000 dollar thing. To have the block rebuilt is about 350 dollars.

Sony has been trying to make the customers who purchased these tv's happy by providing extended warrentys, or giving them a special deal on a similar sized new LCD tv.

I would try to complain to sony and see what you can get accomplished. If you do opt to repair the optical block the odds are that it will happen again in a few years. Ebay and the chicago craigs list are where I have seen the guys who are capable of rebuilding those blocks.

I am sorry for the bad news.

Nov 25, 2010 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

I have a blue mark on the corner of my screen and several blue specks throughout the center of the screen. I changed the lamp thinking it was that but the blue is still there. What else could it be?


This is optic unit (light engine) problem, it has 3 color lcds and blue lcd along with related UV filters became defective and causing blue mark on front screen.
Need to replace optic unit (light engine) to resolve the issue.

Aug 20, 2010 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Problem with sony 60" rear projection TV


Hi,
I'm afraid, it is problem of optical block unit (light engine) that produce picture by 3 lcds inbuilt, the blue lcd and its related uv filters become defective and causing this kind of blue hue on screen.
Complete optical unit block (light engine) will be replaced by qualified tech to get tv fixed, light engine is costly part so ask an estimate before sending tv in.
Thanks.

May 21, 2010 | Sony Grand WEGA KDF-60XS955 60" Rear...

2 Answers

What is the difference between a light engine and optical block?


Light Engine and Optics Block is same thing, main part of DLP TV and multimedia projector to produce and project image on front screen.
Few manufacturer call it light engine and some says it optics block.

Nov 09, 2009 | Sony Grand WEGA KDF-60WF655 60" Rear...

2 Answers

We have a KDF-42WE6555 that was purchsased in


It sounds like early signs of problems with your light engine $$$ (optical block) - google your model # and light engine to investigate.

Oct 23, 2009 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

My Sony Grand Wega LCD TV currently has a large blue spot on the left side of the screen when powered on. I have changed the lamp, but this did not solve the problem. Could this be caused by bad component...


Hi,
I'm afraid, it is problem of optics unit block (light engine), there are 3 LCDs red-green-blue for color picture formation and blue LCD sounds bad, please call local TV tech for fix.
Thanks.

Oct 21, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Bluish color right coener


I'm afraid, it is problem of optics unit block (light engine), there are 3 LCDs red-green-blue for color picture formation and blue LCD sounds bad, please call local TV tech for fix.
Thanks.

Oct 21, 2009 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Blue dots in KDF-60WF655


Yes, your optical block ( light engine) is bad. Heat generated by the lamp circuit with its poorly designed ventilation system, cause the LCD panels inside the light engine to fail. They are the size of a postage stamp. There are 3 LCDs, for red, blue, and green. The heat causes them to warp and de-laminate.

Sony has systematically downed played the scope of this issue. It appears however that virtually every LCD projector they make can develop damage in the light engine which is extremely expensive to fix.

I suggest contacting Sony and your state's attorney general's office of consumer complaints asking for action on this.

michtech

Feb 01, 2009 | Sony Grand WEGA KDF-55WF655 36" Rear...

1 Answer

Sony KDF-55W655 LCD TV with screen problem


Your optical block ( light engine) is bad. Heat generated by the lamp circuit with its poorly designed ventilation system, cause the LCD panels inside the light engine to fail. They are the size of a postage stamp. There are 3 LCDs, for red, blue, and green. The heat causes them to warp and de-laminate.

Sony has systematically downed played the scope of this issue. It appears however that virtually every LCD projector they make can develop damage in the light engine which is extremely expensive to fix.

I suggest contacting Sony and your state's attorney general's office of consumer complaints asking for action on this.

michtech

Feb 01, 2009 | Sony Grand WEGA KDF-55WF655 36" Rear...

2 Answers

Where are LCD panels?


Hello, there are 3 LCD about 1 inch each one inside the optical block unit. Best regards, Arpi

Apr 15, 2007 | Sony Grand WEGA KDF-42WE655 42" Rear...

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