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Sony Trinitron KV-29RS22 Blinks

Hi, I have a KV-29RS22 Sony Trinitron TV (Almost Flat, Black, 10 years old). At the beginning, when I turned it on, the picture started to blink on and off (no image) for about 3 or 5 minutes, after that image became stable, no problems with the sound ever. This behavior is the same in all video inputs.

I opened it up and cleaned it with air spray, removed all dust, but got worst, now tv blinks all the time but I discovered that reducing the picture from tv menu, the blink disappear. I tried to establish a point when the amount of picture does not causes the tv to blink again, but guess what, depending of what I'm watching it makes tv blinking, I mean, if I'm watching a movie where the background is kind of dark tv doesn't blink, if I watch a program or movie with some light on the background tv starts to blink, even if reduced the picture.

Some help will be eternally appreciated.

Thanks in advance.

George

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  • GeorgeWaters Feb 11, 2008

    Thanks for your advice Sedonix, and I agree with you, I don't want to spend a large amount on this, I prefer to get a new one, but before I drop 800 dollars from my wallet, I'd like to see if this is a expensive repair. In the past it had the problem that sometimes the image disappear, it was a broken piece of weld, the repair cost 10 bucks, Do you think that this marginal high voltage involves spending a lot ?, Could it be just a cheap repair ?



    Thanks !!

  • Tatiana M Nov 09, 2008

    I have the same problem with my Sony TV. I bought it eight years ago for 2500 and can't afford to buy a new one. the audio is perfect but the picture blinks every few seconds

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Sounds like the high voltage is marginal.
My experiance is to not put money into a TV that is over ten years old. TVs stress out their electronic components worse than almost any other electronic product. After 10 years, there are so many parts that are ready to fail that your are probably wasting your money trying to get any more life out of it.
Another option is to wholesale replace the main board by sending it to Module Exchange at 972-298-1212,
or PTS Electronics 800-844-7871 ptscorp.com.
Be careful on buying a new one though. Often times, these new technology ones are much worse. Always Google the model number of the set you intend to buy and add the word 'repair' or 'complaint' to see if it is one of the many models that are customer service nightmares being produced by even the most reputable companies today.
Hope ya fix it!

Posted on Feb 10, 2008

  • Greg Collins Feb 11, 2008

    A replacement flyback transformer will cost maybe $150 installed.

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