Question about Sony KDF-42WE655 Television

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I have a sony lcd 55" flat screen. We have blue dots in the center of the screen multiplying every day. What causes this exactly. Is it cost effective to repair ? Could I repair it my self ? I have basic to intermediate skills. Thanks

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Model # says its a 42" sounds like a rear projection lcd tv not a flat panel its your light engine sony will replace it free if its less than 5 years old

Posted on Feb 03, 2010

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Posted on Jan 02, 2017

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The optical block is most likely causing the problem. It will continue to get worse. Sony may help with the repair since they have had a lot of problems over the years with their optical blocks across many models. On the older sets they usually only help with the parts cost. The average repair cost for a optical block replacement is $1200.00 to $1500.00. So if they help with the parts cost it really brings the cost down. Their customer service number is 1800-222-SONY.
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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.
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u have a bad optical block , this part is very costly , but call sony costumer service , u tv maybe onder recall because of this problem

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We have a 42" sony LCD hdtv it's 4 years old and now has blue dots that seem to be multiplying plus a blue area on right of tv getting bigger. Can it be fixed? what is it?


this is a optical block issue, this is a expensive repair try calling sony and see if they will help you with the cost.

Feb 06, 2010 | Televison & Video

1 Answer

Why are blue dots appearing on my Sony Flat screen tv. they seem to multiply every day.


If the dots are tiny, those are probably dead pixels. The circuitry that drives them is probably degrading over time for some reason. It's obviously defective, dead pixels happens a lot with LCD screens. I would hope it would be covered by warranty, because the only way to fix dead pixels is replacing the screen.

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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.


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The optical block is defective. Sony sometimes warranties these even after the 1yr warranty has expired. Contact Sony support and have you full model and serial number handy.

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Sounds like magnetic interference,Do you have a speaker close to that corner?If so you need to relocate it a little farther away.

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Try Moving The Speaker You Have There Away From It?
www.Myspace.com/CrossRoadsToNowhere2007

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You will most likely need to replace the panel. You will have to contact Sony and they will send a Factory Trained Technician to your home to replace it. Since you are not on Factory Warranty this repair will cost you. You may find it cheaper just to replace the television.

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