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Emerson TV - picture jumps, vibrates ...

Discussion in 'Electronic Repair' started by Caiaphas, Oct 17, 2003.

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  1. Caiaphas

    Caiaphas Guest

    I have a 10 year old 25" Emerson TV that I like a lot. Sound is ok. The
    problem is the picture. The picture sometimes jumps, or vibrates. It's not
    continuous but random. The picture is still viewable but quite annoying. The
    sound is never distorted. All antenna connections have been checked.

    I suspect a capacitor is deteriorating but not sure. Any ideas?
     
  2. Caiaphas

    Caiaphas Guest

    I guess the better choice of words is flickering instead of picture jumps or
    vibrates.

    In addition, the white colors appear slightly yellowish. Other colors appear
    ok.
     
  3. Sofie

    Sofie Guest

    Caiaphas:
    If you are hoping for anything specific you really need to post the MODEL
    NUMBER..... as you obviously already know, Emerson has built lots of
    different models of televisions with circuitry and parts layout that is
    unique to each specific model..... ALWAYS post the model number....
    The place to begin your troubleshooting effort would be to verify that the
    main power supply is regulating the B+ properly. ESR check all the
    electrolytics in the PS, flyback derived B+ sources, and the vertical
    deflection circuitry. Check the solder connections around and near the
    high heat producing components such as low-ohm power resistors, power
    transistors and chips, diodes, etc.... look for cracked, dry, or otherwise
    faulty joints.
    If you are not certain what to do next you should go to the website for this
    newsgroup at
    http://www.repairfaq.org/
    There, with some search time, you will find a wealth of troubleshooting
    tips, repair procedures, component testing methods and IMPORTANT safety
    information that will help you stay away from dangerous and lethal
    electrical shock hazards inside your television..... note that these hazards
    can still be present even when the television is turned off and unplugged
    from the AC power.... be very careful.
    If, after reading through the repairfaq, you are still not certain how to
    proceed, and you don't have the proper and necessary equipment, and you do
    not possess the needed electronics knowledge and repair experience.... you
    would be best advised to take your television to a service shop for a proper
    and safe repair.... or at the very least you should TAKE it to a service
    shop so you can obtain a repair cost estimate so you can make an intelligent
    repair decision with facts instead of internet or telephone guesses.
     
  4. Caiaphas

    Caiaphas Guest

    Thanks. My TV is an Emerson model TS2587D. It is over 10 years old and
    probably not worth spending to repair unless I can figure out how to fix it
    myself.
     
  5. James Sweet

    James Sweet Guest

    From your description I would suspect solder joints on the neck board, you
    may as well have a look, though beyond resoldering cracked joints there's
    not much you can do without more general diagnostic knowledge.
     
  6. Sofie

    Sofie Guest

    Caiaphas:
    My previous reply post to you outlined the suggested diagnostic and
    troubleshooting steps you should take. ..... and also the repairfaq
    website for this newsgroup with some very good and helpful information. If
    you are still not certain how to proceed with the repair of your Emerson TV
    after reading through the troubleshooting suggestions and reading through
    all the information at http://www.repairfaq.org/ , then I would very
    strongly suggest that you TAKE your television to a service shop for a
    proper and SAFE repair.
     
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