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why tv goes off by itself?

Discussion in 'Electronic Repair' started by Lee Carkenord, May 30, 2004.

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  1. I have an 8 year old Panasonic tv, model "CT-20G11" I bought this tv
    new in 1996. I paid about $250 for it.

    Its been trouble free til now. It came with a remote control, which
    has been in use daily.

    The last few days, this tv has been acting odd. It makes a kind of
    snapping noise, and goes blank, all audio and video is lost. The
    screen will then look just like we have turned the set off. If I
    touch nothing........in a few minutes the set comes back on, and
    functions fine.......video and audio is back to normal.....until it
    does the same thing again, after maybe 10 - 30 minutes.

    When this tv goes "OFF" by itself, the remote control seemingly has no
    effect.

    After experimenting, I have determined that this only happens if the
    set was initially turned "ON" with the remote control. If I turn the
    set "ON" via the controls on the TV itself, it operates fine for
    indefinite period. It never shuts itself off.

    Please....comments and opinions? Is a moderately priced ($250) 8
    year old tv worth troubleshooting or fixing? It has a nice picture
    and audio when its operating correctly.

    Thank you Lee Carkenord
     
  2. Jerry G.

    Jerry G. Guest

    There may be a high voltage regulation fault, or a power supply fault, and
    the set is going in to protection mode. You should get the set properly
    service before the problem gets very serious, and there is more damage.

    --

    Jerry G.
    =====


    I have an 8 year old Panasonic tv, model "CT-20G11" I bought this tv
    new in 1996. I paid about $250 for it.

    Its been trouble free til now. It came with a remote control, which
    has been in use daily.

    The last few days, this tv has been acting odd. It makes a kind of
    snapping noise, and goes blank, all audio and video is lost. The
    screen will then look just like we have turned the set off. If I
    touch nothing........in a few minutes the set comes back on, and
    functions fine.......video and audio is back to normal.....until it
    does the same thing again, after maybe 10 - 30 minutes.

    When this tv goes "OFF" by itself, the remote control seemingly has no
    effect.

    After experimenting, I have determined that this only happens if the
    set was initially turned "ON" with the remote control. If I turn the
    set "ON" via the controls on the TV itself, it operates fine for
    indefinite period. It never shuts itself off.

    Please....comments and opinions? Is a moderately priced ($250) 8
    year old tv worth troubleshooting or fixing? It has a nice picture
    and audio when its operating correctly.

    Thank you Lee Carkenord
     
  3. Ken Weitzel

    Ken Weitzel Guest

    I'd add one more thought...

    I'm willing to bet a dollar against a donut that the
    manner of turning it on (remote or local) is just
    coincidence :)

    Ken
     
  4. meterman

    meterman Guest

    I have the same tv, and you're right it does not matter if I turn in on
    with the remote or use the power button on the tv. One other odd item,
    sometimes the tv will not turn on at all, when this happens if I press the
    tv/video button on the tv it will power up only to shut down 3-4 minutes
    later, come back on in a few minutes, shut off again in 3-4 minutes, then
    it might stay on for hours.

    any thought on what it might be other that previously stated. also, no one
    really gave an opinion as to whether it was worth fixing as the cost of
    TV's has gone down considerably in the past few years.

    thanks,

    meterman
     
  5. NSM

    NSM Guest

    Irish TV? Only plays shows you don't like - while you're out?

    N
     
  6. Jamie

    Jamie Guest

    unwelcome guest walking around or nesting on the processor control lines?
     
  7. James Sweet

    James Sweet Guest

    Usually cold solder joints around the LOPT or power supply are the cause of
    problems like this.
     
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