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Digital monitor image vibrating sideways

Discussion in 'Electronic Repair' started by Hong Chin Siong, Feb 2, 2007.

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  1. I have a Samsung SyncMaster 753DF that starts to give me problems, upon
    powerup the images will vibrate sideways, this continues for about 10 mins
    and stops once the monitor warmed up. This is not flickering due to lower
    refresh rate.

    Anyone know which circuit / component is the cause of this symptom?

    Best regards,
    Chin Siong.
  2. Siciliano

    Siciliano Guest

    Hi Chin Siong:

    Did you try to call technical support for your monitor?. Could be a
    speaker near the monitor too.....

  3. gonzo

    gonzo Guest

    Might it have something to do with the degaussing circuit?
    These are controlled by a thermistor, and normally it heats
    up in a second and reduces the current to zero. Maybe
    the thermistor is faulty? The degaussing coil may be attached
    via a plug to the chassis, if it could be unplugged it would be
    obvious if it were the culprit.
  4. Jerry G.

    Jerry G. Guest

    This is most likely a degaussing circuit problem, or a problem in the
    power supply, or a component that is causing an unstability in the
    horizontal scanning circuit. There are many components involved, and
    guessing is not a recomended way to go. Proper troubleshooting by an
    experienced tech with the proper service information should result in
    finding the fault.

    Jerry G.
  5. Hi Jerry,

    Thanks! Looks like it's time for me to get a new monitor....
  6. Jerry G.

    Jerry G. Guest

    In the flat screen LCD monitors, take a look at the new models of
    Samsung. They are very impressive for the price. If you want to go
    for the higher end, the professional series from Viewsonic is

    Jerry G.
  7. Siciliano

    Siciliano Guest

    Hi again Hong:

    I have a Viewsonic (CRT) and it is a very good monitor. If you have
    space in your desk, I recomend you a CRT monitor of 19'' (Quality vs.
    Price it is much better than LCD monitors).

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