Question about Toshiba CZ32V51 32" TV

4 Answers

Toshiba CZ32V51 no vertical scan

Sound good but pic is one line in the middle of the screen

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  • web4profit Feb 18, 2008

    which board to be replaced?
    How much does it cost?

  • web4profit Feb 18, 2008

    I have an electronics background , is it hard to change the board?
    This problem have been on and off for about two months now..could it be just a chip or loose connection?
    Thanks

  • web4profit Feb 18, 2008

    yes...give me the link please

  • web4profit Feb 18, 2008

    lots of parts here..what is the name of part or board?

  • web4profit Feb 18, 2008

    Toshiba CZ32V51 no vertical scan
    sound good but pic is one line in the middle of the screen. This has been on and off for a few months now.Could it be a loose compenent or baortd? Which part or board controls vert scan on this TV?

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4 Answers

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If I were you, I just buy a new one, its to expensive to replace the chip and after replacing theres another problem popping up. In my own experience that is the most frustrating. a new one would be better than wasting your money and time and another problems came up after repairing it.

Posted on Feb 18, 2008

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Hi,

If I may add to IB4G2008's posting.

Your post/description is indicative of a vertical failure. More often this is just a single power pack IC with a heatsinked normally located near the very center of the main board. Often, due to high power dissipation, the solder joints of its pins gets cooked and therefore develop loosed connection. Generally, this is termed as a cold solder. Solution would be to re-apply heat with a low wattage soldering iron.

in some cases, the IC itself would be defective and a straight forward replacement is all that is needed.

At other times it may be the capacitor very near the same IC that would be defective.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Feb 18, 2008

  • Louie  Role
    Louie Role Feb 18, 2008

    Sorry Jaime867, looks like we're on to the same conclusion. Guess you posted while I was still composing. Cheers.

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Try to locate an IC that is mounted on a heatsink with markings LA7838 or something similar to that IC.

Posted on Feb 18, 2008

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That is a truly unhappy video controller. happen recently? looks like you're in for a new board replacement scenario.

vertical deflection amp is not getting the job done.

Posted on Feb 18, 2008

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  • Patrick Michaels
    Patrick Michaels Feb 18, 2008

    most likely the main controller board..they run from 125 to 250 bucks, refurbished. you up to speed on that?

  • Patrick Michaels
    Patrick Michaels Feb 18, 2008

    good..yes..it could..you can open that up, mighty easily..just be careful with the screws..they are soft, and strip easily..

    look for something loose..but a chip is usually on board, not in socket, for reliability.

    hope that's enough for you to close this one. do you need a link to the board sales folks online?

  • Patrick Michaels
    Patrick Michaels Feb 18, 2008
  • Patrick Michaels
    Patrick Michaels Feb 18, 2008

    video control board, or system control board..only way to know that is with the hard to find service manual.

  • Patrick Michaels
    Patrick Michaels Feb 18, 2008

    This is all fine, of course. Yet you may be complicating your life, by attempting component level analysis, without the proper investigative tools. Do you have a set of lab tools, including analyzers, to make this sort of determination? Thanks to the other Team of Experts for bringing this value to your analysis. Be mindful, after this session, to award the Best Solution to whomever you believe was most assistive.

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