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Acer CRT screen display just got permanently narrower

Discussion in 'Electronic Repair' started by JYMusic, Apr 21, 2007.

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  1. JYMusic

    JYMusic Guest

    This 7-year-old Acer CRT monitor that I've been using started flickering a
    little and then something suddenly happened to cause the screen to
    permenantly get narrower. It's not the computer, because I had two
    computers connected via KVM switch and it happens with both regardless of
    the screen res I select. It's not the KVM switch because I tried connecting
    the monitor directly and it still happens.

    Is a narrowing screen something that typically happens when an old CRT
    monitor is dying? Even if I increase the geometry settings, the screen
    display still is narrow. Also sometimes the power LED appears not to be as
    brightly lit as usual.

    Is it time to get rid of this monitor?

    Thanks,

    J.
     
  2. If with 'narrow' you refer to the pictures breadth, then two things
    may have happended
    - the deflection current is smaller
    - the anode high voltage of the cathode-ray-tube is higher.
    The cause for both deviations will have to be found in the innards
    of the device. Often it is just a failed capacitor, but which one?
    This may happen with a new device as well. You can usually not
    assume that all parts in a device age with the same speed or start
    with the same health.
    You will have to decide this on the basis of your preferences and
    your economics. If you find a freak who likes to repair monitors, you
    may well regain at low cost a device that serves you another 15 years.

    Regards,
    H.
     
  3. hr(bob)

    hr(bob) Guest

    Some of us who repair monitors to help keep them out of landfills for
    a little longer really do not like to be called "freaks".

    H. R.(Bob) Hofmann
     
  4. hr(bob)

    hr(bob) Guest


    Without a model number, all you wil get here are generalizations.

    After 7 years, it is probably still fixable. But, you didn't say how
    the overall picture quality was before the series of events. If
    everything else was ok, it might be worthwhile getting it fixed. You
    would have to find someone who is willing to look at it and give you
    an estimate. After 7 years, it probably is marginal to spend the
    money, especially when new CRT monitors are so cheap.

    H. R.(Bob) Hofmann
     
  5. JYMusic

    JYMusic Guest

    <<Without a model number, all you wil get here are generalizations.

    After 7 years, it is probably still fixable. But, you didn't say how
    the overall picture quality was before the series of events. If
    everything else was ok, it might be worthwhile getting it fixed. You
    would have to find someone who is willing to look at it and give you
    an estimate. After 7 years, it probably is marginal to spend the
    money, especially when new CRT monitors are so cheap.

    H. R.(Bob) Hofmann>>

    I don't have the model number handy, but it's only a 17" CRT, likely was
    marketed as a flat-screen-crt, but not really flat. Likely no better than
    the monitors that Circuit City is selling for around $99 now.

    I just moved the Acer to the basement and I'm now using the 17" Dell monitor
    that has been sitting around unused, and which came with a Dell computer I
    bought around 4 years ago.

    The Dell monitor is the same screen size but has a less bulky case, and may
    even be generating less heat than the old Acer did.

    J.
     
  6. I you can find someone with an ESR capacitor Tester it would be a easy fix.
    About 90% of the time, a few capacitors fix that type of problem.
    Clarence
     
  7. Dear Bob, please allow me aboard the little boat with the rest of this
    nearly extinguished species of CRT-monitor-repair-freaks. I call
    myself such a freak, too. We here in Krautland call somebody a freak
    who does, other than the dumb public, devote a special interest to
    something and develops a special ability in that area.

    Regards,
    H.
     
  8. hr(bob)

    hr(bob) Guest

    Here in the USA, the word has a more sinister connotation, such as the
    Virginia killer from last week.

    Bob Hofmann
     
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