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JVC TV horizontal line across the middle

Discussion in 'Electronic Repair' started by Pat, Dec 10, 2003.

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  1. Pat

    Pat Guest

    I have a 32" JVC TV, about 7 years old. It works on and off lately,
    it will show a horizontal line across the middle. I am fairly
    familiar with electronics, obviously the vertical is messed. But if I
    whack the side of the TV the picture comes back, sometimes it will
    stay on for an hour, sometimes only a minute. It's no longer under
    warranty and was fairly expensive so it would be worth fixing, I read
    on here that JVC have notorious cold solder joints, if that is all it
    might be I might be able to fix it myself. Seems like something is
    loose since it comes back when i hit it. If it might be more invovled
    than resoldering a couple things I would rather put the liability on
    someone else. Any ideas how invovled that might be or how much it may
    cost to fix? Thanks, -Pat
  2. Sofie

    Sofie Guest

    My best suggestion is for you to STOP whacking the set and STOP using it
    with this intermittent problem...... it will only get worse and the repair
    will involve more parts and be more expensive. It will not heal itself....
    get it fixed and stop nursing this along.
    Your thoughts about bad solder joints around the vertical deflection output
    chip and circuitry is correct...... get this into a shop right away for
    what should be a fairly inexpensive repair..... as long as it still displays
    a full picture. Possibly there are bad solder joints elsewhere in the B+
    and flyback derived B+ distribution circuitry and some marginal
    electrolytics that will need to be tested with an ESR meter and replaced if
  3. James Sweet

    James Sweet Guest

    Quit using it now or you'll burn in the tube. This sounds like something
    that anyone with decent soldering skills and some common sense could fix.
    Look for the vertical output IC, it'll be on a heatsink and have somewhere
    around 10 pins on it. It's likely solder joints on or near that, resolder
    anything else that looks cracked or excessively dull while you're at it,
    shouldn't take you more than an hour or two to fix.
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