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Discharge of crt?

Discussion in 'Electronic Repair' started by Dave M., Apr 1, 2004.

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  1. Dave M.

    Dave M. Guest

    A couple of times at each session my new AMW 19" computer monitors display
    blinks (quickly, slightly collapses and rebounds). Is this caused by a
    discharge at the crt? Is this normal?

    Thanks,

    Dave M.
     
  2. john

    john Guest

    Collapses which way Vertical or Horizontal ?
    kip
     
  3. Dave M.

    Dave M. Guest

    It's hard to catch. It could be either. I'm aware that the low voltage power
    supply can cause both vertical and horizontal collapse and vertical collapse
    is often caused by vertical amplifier gain and/or linearity problems,
    but then I should be asking if you understand either symptom on monitors as
    "not uncommon". Perhaps it is a momentary loss of sync caused by the video
    card?
     
  4. john

    john Guest

    What I would do is strip it down
    and go over the PCB with a Mag
    glass and look for dry solder joints
    very common on TV,s and Monitor
    before its gets worse and wont come on.

    kip
     
  5. Dave M.

    Dave M. Guest

    That's something I never considered!
     
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