Question about Sony KV-27V26 27" TV

1 Answer

Video flashes off and on.

Sony KV-27V26 The set takes a long time to warm up (up to 20 minutes) with no picture - audio is fine. Once it warms up the video flashes off and on. Initially this flashing lasted another 15 minutes or so. Eventually it stabilized. But it recently started flashing after this start up period - sometimes after the set has been on for hours with no flashing. However, now the flashing is almost always occuring. The video is off for approx. 3 or 4 seconds, then it's on for approx. 10 seconds. Thanks for any advice!

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  • Anonymous May 14, 2009

    Thanks very much!

    One final question...

    I'm definitely not able to do this repair myself, so I'll have to go to
    a repair shop. Is this likely to be an expensive fix? What should I
    expect to pay?

    Thanks again. I really appreciate your help!

×

1 Answer

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  • Master
  • 1,348 Answers

The tuner module is bad.
where the cable goes in in the back of the set,there is 2 modules on the main pc board and they are soldered in.
the smaller block is the IF module and it has broken grounds inside. it has to be removed from the main pc board and there is 7 pins or so.once the module is out,remove the tin covers and resolder the grounds around the perimeter.put the module back in.
i have fixed 100 of them

Posted on May 13, 2009

  • kirtec auto May 15, 2009

    it takes about an hour and a half.the repair should cost less than 100 dollars.i fixed alot of those tuners and IF modules.

    if someone is not familiar with the problem,it can be difficult to trace down.there is a unit called a tuner sub box. you put the signal into the IF block and there should be a picture.



    the other option that you can try is to run a vcr video out and audio out into the video and audio inputs in the back of the t.v.. this bypasses the tuner and IF module. direct video and audio. you have to put the input select to video. you can buy a used vcr for cheap these days. best of luck...

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