Question about Sony 40 KDL40EX520 LCD TV

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My Sony TV Model KDL-40EX520 digital colour had a discoloration problem on LCD panel is problem a major one and factory defect. Just bought and used more than a year. How to find for replacement if no

TV was bought in Doha Qatar, about a year ago thru Modern Home the sole agent of TV Sony and purchased in Carrerfour Doha City Center

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Its a comman problem in sony lcd please there is a problem in system board near lvds jack replace common mode coiles which are very near lvds jack these coils are open after replacing your tv become ok

Posted on Jan 12, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: CRACK LCD TV SCREEN

I don't have a listing for your model, but it is not unusual for the panel to cost more than a replacement set. As another example, the replacement tube (CRT) for a 27" Sony set can easily be $700. This was when these sets were being sold for $350!! Parts is where these companies rake in big profits. Don't blame the servicer for this one.

Sorry about the bad news.
Dan

Posted on Aug 29, 2008

  • 668 Answers

SOURCE: Thin vertical line

You are going to find it is a LCD panel problem. I am sure that they will take care of you. But also realize that this could have happen to any brand of LCD panel and you will probably not have any other panel issues once it is fixed.
I feel your pain,
Skyassoc

Posted on Jun 22, 2009

jerryg50
  • 1673 Answers

SOURCE: SONY KDL-52xbr4 - lcd panel shot after 17 months

This can be the panel itself, and or the matrix decoder/driver boards. The cost of this type of repair can approach the cost of a new set. From your description, I am thinking it is the panel itself that has failed.

Parts for your set are from Sony only because there is no third party manufacturing for these types of parts and assemblies.

Usually, when these types of sets become defective they are usually not worth servicing. During warranty the manufactures generally give a new set to the client, or they give a re-built set which has been built up using parts and modules from other sets that came back for service and had different types of problems.

If you know a tech is is good at servicing these types of set, maybe he can find a number of scrapper set of the same model to take parts from. You just have to hope the ones he finds have the same types of fault.


Jerry G.


Posted on Aug 06, 2009

  • 2 Answers

SOURCE: sony kdl-46xbr4, horizontal lines

Sony is replacing LCD Panels at no charge until October 31 2012. The KDL46XBR4 and KDL46XBR5. If you paid to repair they'll pay you the cash back you paid to repair it.

Posted on Apr 06, 2010

tvhelp-Dave
  • 178 Answers

SOURCE: Bravia KDL-46VL130 TV: Our Sony KDL-46VL130 picture is streaking and some...

That symptom may cause by the main board or t-con board, I suggest you do software up grade first.

Posted on May 07, 2010

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This problem could be from a circuit resistor, it needs to be replace. Believe it or not this a common problem on most TV that are build to save money to the manufacturer.

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Get a digital antena,If u using the signal over the air,rescan.If the signal is cable or other pay tv signal.Ur digital turner,it damage.

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