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Weird CRT monitor acting like an LCD !

Discussion in 'Electronic Repair' started by (Just) Allan, Dec 11, 2005.

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  1. (Just) Allan

    (Just) Allan Guest

    I have a 21" Dell CRT monitor. About a third of the way from the top
    of the screen there is a horizontal line - just like you see when an
    entire line of pixels fails on an LCD monitor. It's only very faint
    at the moment. The line is dead still (doesn't roll with the refresh
    rate) and it is (obviously) more noticeable when the screen is white
    or the white mouse pointer is positioned so the line passes through

    What would cause this kind of fault !?

  2. Dave D

    Dave D Guest

    It sounds like it might be a trinitron/aperture grill CRT, which has support
    wires approx 1/3 from the top and bottom of the screen. If so, this isn't a
    fault, it's perfectly normal. Generally the wires should be very faint,
    though noticeable on light screens.

  3. James Sweet

    James Sweet Guest

    Sounds like you have a Trinitron, it'd be either vertically flat, or
    completely flat face. There's another line about 1/3 up from the bottom,
    this is by design and is perfectly normal, I can see the lower one on my
    own monitor as I write this, it's quite faint though, I don't notice it
    unless I look for it.
  4. (Just) Allan

    (Just) Allan Guest

    Yep, that's it alright - thanks folks.
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