Question about Sony KP-53HS30 53" Rear Projection HDTV-Ready Television

1 Answer

Only red on Sony Rear Projection 53" TV DRC-MF/MID-X

Hi,
The TV: Sony Rear Projection 53" TV DRC-MF/MID-X

The problem: Only a red screen at start, then turn off after few second (because the red is getting too bright).

When I unplug the base of the red tube, green and blue are back and TV work fine...without red.
Thanks for you precious help
Donation if I can fix the TV :))

Posted by on

  • 1 more comment 
  • wings_it
    wings_it Dec 14, 2008

    ??

    You reckon?

    when the green and blue bulbs works without the red, and the red is over powered when all connected??

    Where should be the loss connection? Main board or base of the tube.

    Thanks

    JP

  • wings_it
    wings_it Dec 15, 2008

    I will rate you and hope that I can give some help too.

    I did play around on the mother and the board on the neck of the tube and solde a few point, but did nothing really then I try to shake it (looking for bad contact, nothing again...

    I found between the blue and green tube a plastic box with 6 poties, 3 are for the power of each bulb and the other three for the definition of the picture.

    Playing with those tree first I was able to get a reasonable good picture but with a light red shadow.

    So the problem is not solve but I've got the TV back.

    Before finding this "by pass" solution I saw the stand bye led 6 times blinking.

    Diagnosis: Low B OCP/OVP(Overcurrent/aver Voltage).Possible causes :5+line is overloaded.(A,B boards), +5 line is shorted.

    The sony is a KPFS 53 M31, and I'm not sure that I found the right diagnosis, Can You Confirm if this diagnosis for this TV is right? And Where can I get some more details about the A and B boards? Do you have a ready fix for this problem?

    Those are my last question, promise :)

    Thanks for you help..

    JP

  • wings_it
    wings_it Dec 17, 2008

    Not really satisfied, when I pay for an expert I expecte more details and not the ready answers who's fitting 95% of TV problems.
    But he recommand me someone else so the contact is good.
    I suggest when you don't know, don't answer, especially when we pay for assistance.
    cheers

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  • 1,226 Answers

Hello,

There is a loss connection in your TV...Try to open the circuit and resoldered all the connection. else if you can not dare to fix at your own then contact nearest service center.

warning High voltage!

melnavz

Posted on Dec 12, 2008

  • 1 more comment 
  • Emelio Navaja
    Emelio Navaja Dec 15, 2008

    You should rate me thank for try so that your question visible to other expert!

    thanks


  • Emelio Navaja
    Emelio Navaja Dec 15, 2008

    There is abnormality pwer supply causing the tv turn off automatically. Verify parts in the circuit board, such that regulator and resistor and capacitor.

  • Emelio Navaja
    Emelio Navaja Dec 17, 2008

    Hello again!

    Since you found out that there is a 6 times blinking, this symptoms due ♦ Abnormal High voltage ♦ Abnormal H.drive ♦ +
    5Vdown, this is horizontal deflection failures, try to verify some ic's maybe it add the fault. continue moving on your findings that helps a lot.

    if this not solved then recommended you to benimur he is more expert than me. http://www.fixya.com/users/benimur

    melnavz





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