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Panasonic TX2122 picture problem

Discussion in 'Electronic Repair' started by Davemar, Mar 1, 2005.

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  1. Davemar

    Davemar Guest

    I've just picked up an old Panasonic TX2122 TV. It has a problem with
    the picture which shows up as two wide vertical white bars one the
    screen, which are obviously some sort of distortion on the signal.
    I get this when receiving a picture via RF. However if I play a video
    via the video input I get a good picture. I also tried using the TV
    tuner on the video to relay a TV station to the video input, but that
    doesn't work - it causes lots of interference that seems to go back
    and affect the video's RF. I had a working TV connected to the video's
    RF output and this destroyed it's picture generating loads of interference.
    Looks like its some problem in the RF stages of the TV, any ideas what
    I can check?

    I'm not sure what chassis this particular TV has, as I can't find
    any markings on it.

    BTW, its a UK PAL model with teletext.
     
  2. Jerry G.

    Jerry G. Guest

    The fault would most likely be in the tuner or IF sections. This would
    require proper troubleshooting to find the faulty components.

    --

    Jerry G.
    ======


    I've just picked up an old Panasonic TX2122 TV. It has a problem with
    the picture which shows up as two wide vertical white bars one the
    screen, which are obviously some sort of distortion on the signal.
    I get this when receiving a picture via RF. However if I play a video
    via the video input I get a good picture. I also tried using the TV
    tuner on the video to relay a TV station to the video input, but that
    doesn't work - it causes lots of interference that seems to go back
    and affect the video's RF. I had a working TV connected to the video's
    RF output and this destroyed it's picture generating loads of interference.
    Looks like its some problem in the RF stages of the TV, any ideas what
    I can check?

    I'm not sure what chassis this particular TV has, as I can't find
    any markings on it.

    BTW, its a UK PAL model with teletext.
     
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