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Lines across JVC TV

Discussion in 'Electronic Repair' started by Hex, Sep 22, 2006.

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  1. Hex

    Hex Guest

    I've a 27" JVC AV-27820 TV that has a band of lines running across the
    bottom. The lines vary in width but are generally thin and dance up and
    a bit withinthe band. The band started at the very bottom, but has
    expanded to fill up the bottom quarter or third of the screen over the
    last few weeks. The only other relevant fact is that jiggling the power
    cord can reduce or eliminate the band temporarily, for a few second to
    a minute. If I had to guess, I'd say that It looks like vertical height
    adjustment is too great, but of course there is no vertical height
    adjustment on the TV.

    I'd appreciate any idea on how to fix it. Needless to say, going to a
    repair shop is out of the question. It would cost more than the TV is
  2. Cliff Top

    Cliff Top Guest

    Looks like the frame IC is either faulty or has dry joints. Its common for
    them to run hot and fracture the leg soldering. The chips not too expensive,
    but requiressomeone good at soldering to change it

  3. Sofa Slug

    Sofa Slug Guest

    I have a JVC AV-27770 that was having similar vertical deflection
    problems. Tapping on the cabinet or gently lifting up one corner of the
    set and setting it back down would sometimes correct it temporarily. It
    turned out to be bad solder joints on the back of the small PC board
    that connects to the CRT.
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