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Horizontal sync problem?

Discussion in 'Electronic Repair' started by RubyTwoShewz, Jun 3, 2004.

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  1. RubyTwoShewz

    RubyTwoShewz Guest

    Hi all, I'm way out of my depth here and hoping for some advice on a
    couple of fronts.

    I have a Magnavox TS2560-B101 that my brother gave me when he bought a
    big screen TV. I'm not sure how old it is, but I've had it a year or
    two and worked just fine until tonight. Problem is, I don't have the
    manual and I can't find one online.

    So my first problem: where on earth is that little plastic door you
    open to fool with the settings like vertical hold and things like that?
    The remote on this includes settings like brightness, but no vertical
    or horizontal hold. Do these things not exist anymore?

    Second: The TV just went screwy tonight, and in reading online and
    doing a search of this ng, I'm pretty sure it's the horizontal sync. It
    starts getting this blob that moves from left to right, and then the
    whole screen is diagonal and broken up. I checked a repair faq online
    and it had some pictures, and my problem seems to be the horizontal
    sync. It does it immediately when I start the tv, then sometimes clears
    for a bit, then back and forth. This just happened an hour or two ago,
    so I can't really tell you if it only happens when the set is cold and
    so on. It seems very random so far.

    I actually thought it was the cable at first, because I could turn on
    the VCR and it didn't do it. While I was on hold with cable to report
    the problem, I had a tape in for testing, and then it happened on the
    tape as well. But it doesn't seem to be as prevalent on tape as it does
    live tv if that makes sense.

    In reading online, I read something about turning up the brightness,
    and that did seem to help (though the breakup still happened eventually
    and then went back to okay).

    So, as a temporary measure until I can get a repairman here, I'd like
    to find the control for horizontal hold and fiddle with that to see if
    I can fix it.

    Then, I need to call a repairman, and I'm new in town so don't know
    anybody. Should I just call someone out of the phone book? Any tips on
    not getting ripped off? (I have had some very negative experiences with
    repairmen who realized I know nothing about appliances or home repairs.
    I *know* there are decent repair guys out there...just how to find one
    and kind of bluff that I know what's going on. Otherwise I end up with
    a new picture tube.)

    Thanks for listening and any advice you can give. This was totally out
    of the blue and unexpected.

    Ruby
     
  2. Jerry G.

    Jerry G. Guest

    There re no hold adjustments in many of the TV sets. They use a PLL type
    circuit that does the sync lock up.

    Your set has some components that are failing. It is not an adjustment. With
    proper troubleshooting it can be fixed. The tech will need the service
    manual, unless he is very familiar with the circuit designs. It is a matter
    of taking the necessary voltage readings in the problem areas to see if the
    supply is okay, and then tracing out the signals to see where the fault is.

    This is not something that can be easily fixed over an email.

    You can probably purchase the service manual through Sam's Photofacts, or
    contact the manufacture parts distributor directly.

    --

    Jerry G.
    =====


    Hi all, I'm way out of my depth here and hoping for some advice on a
    couple of fronts.

    I have a Magnavox TS2560-B101 that my brother gave me when he bought a
    big screen TV. I'm not sure how old it is, but I've had it a year or
    two and worked just fine until tonight. Problem is, I don't have the
    manual and I can't find one online.

    So my first problem: where on earth is that little plastic door you
    open to fool with the settings like vertical hold and things like that?
    The remote on this includes settings like brightness, but no vertical
    or horizontal hold. Do these things not exist anymore?

    Second: The TV just went screwy tonight, and in reading online and
    doing a search of this ng, I'm pretty sure it's the horizontal sync. It
    starts getting this blob that moves from left to right, and then the
    whole screen is diagonal and broken up. I checked a repair faq online
    and it had some pictures, and my problem seems to be the horizontal
    sync. It does it immediately when I start the tv, then sometimes clears
    for a bit, then back and forth. This just happened an hour or two ago,
    so I can't really tell you if it only happens when the set is cold and
    so on. It seems very random so far.

    I actually thought it was the cable at first, because I could turn on
    the VCR and it didn't do it. While I was on hold with cable to report
    the problem, I had a tape in for testing, and then it happened on the
    tape as well. But it doesn't seem to be as prevalent on tape as it does
    live tv if that makes sense.

    In reading online, I read something about turning up the brightness,
    and that did seem to help (though the breakup still happened eventually
    and then went back to okay).

    So, as a temporary measure until I can get a repairman here, I'd like
    to find the control for horizontal hold and fiddle with that to see if
    I can fix it.

    Then, I need to call a repairman, and I'm new in town so don't know
    anybody. Should I just call someone out of the phone book? Any tips on
    not getting ripped off? (I have had some very negative experiences with
    repairmen who realized I know nothing about appliances or home repairs.
    I *know* there are decent repair guys out there...just how to find one
    and kind of bluff that I know what's going on. Otherwise I end up with
    a new picture tube.)

    Thanks for listening and any advice you can give. This was totally out
    of the blue and unexpected.

    Ruby
     
  3. Sofie

    Sofie Guest

    RubyTwoShewz:
    This should NOT be an expensive repair at most shops familiar with the
    Magnavox televisions of this and similar models if you STOP using the
    television and get it into a service shop right away. If you continue to
    nurse this along (there is NO little door with vertical and horizontal hold
    controls) eventually there will be more drastic and much more expensive
    failures. Right now, as long as the television turns on, the problem may
    be limited to a few high esr electrolytics in the PS and maybe some faulty
    solder connections......
    ..... DO NOT wait until it doesn't turn on at all.
    At the very least you should TAKE it to a shop for a repair cost estimate so
    you can make an intelligent repair decision with facts instead of internet
    or telephone wild guesses. As long as the picture has been clear and
    bright in the recent past, repairing the television may be a good
    decision...... this vintage of Magnavox televisions were quite good and
    very reliable.
     
  4. RubyTwoShewz

    RubyTwoShewz Guest

    LOL, I had it on kind of watching some news in the background, and it
    seemed to be doing pretty well, only going crazy every now and then,
    then returning to normal in a few seconds. But I immediately turned it
    off when I read your message.

    Thanks much for your post...I'm going to start calling around today and
    try and find someone who is familiar with this brand of television.

    Ruby
     
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