Question about Toshiba 55H70 55" Rear Projection Television

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Toshiba projection TV Flickers

Screen flickers caving in from sides and then shuts down

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  • gtracy2117 Feb 18, 2008

    Are there three chips for red, blue & green?

  • gtracy2117 Feb 18, 2008

    I had convergence chips replaced, and the repairman resodered suspect connections. TV worked for a couple of months with perfect resolution and then sudently went back to the same flickering and shutting down. It has been in a local toshiba dealer repair shop for two weeks and they say they cant find the problem. They said they replaced a couple of bad capacitors but didn't help. They suggest I buy a new TV?

  • gtracy2117 Feb 18, 2008

    What would be a good time to call you?

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  • 211 Answers

You may have bad convergence chips in the set. I have worked on some with similar problems and replacing the convergence chips was the solution. Good luck and I hope this has helped.
Ed
NC Electronic
Mills, Wyoming

Posted on Feb 18, 2008

  • 1 more comment 
  • Ed Meshechek
    Ed Meshechek Feb 18, 2008

    Unless you have a older set ( 6 years old or older in most cases ) there are only 2 convergence chips. The number normally starts STK. ( ie: STK 392-020 ) . If you have an older set, you may have 3 chips or maybe even just one controlling all three colors. I hope this has helped.

    Ed

    NC Electronics

    Mills, Wyoming

  • Ed Meshechek
    Ed Meshechek Feb 18, 2008

    I just sent a response on another of your posts. If I can help more, call me at my home 307-266-4675. I would be happy to help in any manner possible.

    Ed

    NC Electronic

    Mills, Wyoming

  • Ed Meshechek
    Ed Meshechek Feb 18, 2008

    Call right now if you'de like...

    307-234-6177.



    Ed

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Flickers caves in on sides then shuts down


I can understand the frustration of the repair shop, as getting help from Toshiba is almost non existent. When the boards in any big screen gets hot and used, many components on the board degrade and in your case, it sounds as though the fix would be a replacement board. Unfortunately, you may not be able to get one. If your local repair shop can't find the problem you might ask them for the board number and do some research on your own for a board. Most wholesalers will sell to the consumer if you have a credit card, and if you can find the board, have your local shop install the new/refirb board and do whatever adjustments are necessary. Good luck. I hope this has helped in some way
Ed
NC Electronics
Mills, Wyoming
Have a Great Presidents Day

Feb 18, 2008 | Toshiba 55H70 55" Rear Projection...

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