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Panasonic TV with horizontal problem

Discussion in 'Electronic Repair' started by JoeD, Mar 8, 2005.

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  1. JoeD

    JoeD Guest


    I have a 8 year old Panasonic 31" or 32" CT31SF10R. It was working great
    until 4
    weeks ago.
    Several times a week, the picture goes black and compresses
    down to a thin horizontal line with the sound remaining on. To
    temporarily fix the problem, I simply
    turned it off, waited a few seconds, turn the TV set back on and the
    problem goes away.
    I am concerned that this will get worse. The TV is on for over 50 hours
    a week, so we get a lot of use at of it.

    Any advice on what the problem and is it worth fixing? As I said the
    picture and sound are still as good as the 1st day I bought it.

    Thanks for any advice.
  2. Art

    Art Guest

    Actually you have a vertical problem, loss of vertical deflection is causing
    your horizontal line. Repair the vertical circuits, ESR the caps in the
    vertical and associated power supply circuits, replace the vertical output
  3. JoeD

    JoeD Guest

    Thanks Art.

    Would you have a ballpark idea of how much this would cost to repair. I
    live in the NYC area.
  4. Art

    Art Guest

    In shop from $75 -$150 depending on the shop and what they actually need to
    do to rectify the problem. May want to call about and get some insight
    before taking the set in. Actually check with friends and neighbors
    regarding local establishments and their recommendations.
  5. JoeD

    JoeD Guest


    Since the problem is extremely intermittent and the likelihood that it
    happens when I bring the set in is very small, will a decent to good
    repair shop fix the problem?
  6. Art

    Art Guest

    May take them a bit of time but any good shop with Panasonic Repair
    experience and service literature should be capable of doing the job. BTW
    Give Panasonic a call in Secaucus and ask them for a referral in your area.
    Good Luck
  7. JoeD

    JoeD Guest

    Thanks again for your advice.
  8. When the set fails, can you get the picture to come back or flicker by
    tapping the set?

    A thin HORIZONTAL line indicates a failure in the vertical amplifier
    section. I'd look for a fractured solder connection. A good place to start
    is PCB board connectors and larger resistors (1W or above), but anything can
    fracture. Look for areas of heat stress (discoloration) on the PCB for prime
    suspect areas.

    Hope this helps.
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