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Discussion in 'Electronic Repair' started by Dan Gett, Jul 30, 2003.

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  1. Dan Gett

    Dan Gett Guest

    Hello I have a Sharp TV 25AV79 with a vertical collapse problem. Any
    ideas on a specific fix for this unit? It would be greatly
  2. Sofie

    Sofie Guest


    Dan Gett:
    Yes, lots of ideas for a fix.... you need to dust off your test equipment
    and tools and begin to troubleshoot the vertical deflection circuitry, check
    for high ESR electrolytics, shorted semiconductors, open resistors, bad
    vertical output chip, missing flyback derived B+, faulty and cracked solder
    connections, etc, etc.
    For lots of troubleshooting tips, repair procedures and component testing
    methods you might want to visit the website for this newsgroup at
    Take some time and read through the repairfaq, taking special notice of the
    SAFETY information .... there are dangerous and lethal electrical shock
    hazards inside the television that can still be present even when the
    television is unplugged.... be very careful.
    If you are still not certain how to safely proceed and actually perform the
    necessary troubleshooting then you might be best advised to take your
    television to a service shop for a proper and safe repair.... or at the very
    least, get a repair cost estimate so you can make an intelligent repair
    decision with facts instead of internet guesses.
    Best Regards,
    Daniel Sofie
    Electronics Supply & Repair
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  3. David

    David Guest

    Troubleshoot and repair the vertical deflection circuit. Should be a very
    easy fix for even the apprentice technician.
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