Question about Sony KP-53V85 53" Rear Projection Television

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No picture, no sound

I have a Sony KP-53V85 does not power up. The fuse inside is okay. Perhaps it is the power supply. Can I check this myself with a voltmeter ? Where would I test it and what should I expect ? I may need to get repair person eventually, but I would like to diagnose the problem myself. Any help/hints will be most appreciated. Thanks.

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  • AAgrawal May 26, 2008

    No, LED is not lit or blinking when I press Power. I am very sure that there is power in the outlet.

  • AAgrawal May 27, 2008

    Thanks for the tip. How can I get circuit diagram/schematics so I can identify the right part and number. Also where would I get replacement parts from ?



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Is the led blinking when you press power? If so let me know the number of blinks its making.

Posted on May 18, 2008

  • Sonny Berry
    Sonny Berry May 26, 2008

    check the fuses if the fuse is blown it could be something as simple as a low volatage regulator or horizontal output tarnsistor that is shorted. Which is easy to test with an ohms meter.

  • Sonny Berry
    Sonny Berry May 27, 2008

    you can get your service manual emailed to you from the following link and they also have any parts you would need plus they give free tech support. I am one of their support techs. I have moved the manual to the front page so its easy for you to find, they email it out right after purchase within minutes,



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I need the model number to give you exact answer..i suspect power supply it is probably a sony tv common problem regulators go bad and cold solder joints or samsung.


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Herringbone (and other patterns) can be caused my many faults, the obvious one the tech was looking for was a tuner/interference fault.

Another common cause is a faulty power supply.

Difficult to say without having the TV on the bench.

I'm a bit suspect about the $400 - $500 repair cost though.

Perhaps try another tech?

I doubt it's a DIY repair though.

Let's know how you get on.

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plug it out to reset itself and if that does not work,you will have to call a tech as the tv has a problem in its power supply an its related circuit good luck.

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