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G790 arcing

Discussion in 'Electronic Repair' started by Garth, Jul 16, 2003.

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  1. Garth

    Garth Guest

    I have a Viewsonic g790, and theres arcing from where the flyback connects
    to the transformer, anyone have any ideas about how to fix it?
  2. Levi Kudrna

    Levi Kudrna Guest

    Exactly where is the arcing coming from? If it's on the bottom of the PCB
    it could be bad solder joints. Check for anything that could be causing a
    short near the flyback. If there is arcing on top of the flyback, then it
    could be bad or cracked. I would replace it then.

  3. Garth

    Garth Guest

    Its comeing from where the red wire attaches to the top of the transformer,
    to somewhere under the magnets (i really don't know much about it), i looked
    close and i think one of the magnets is broken.
  4. You may have two problems: (1) Excessive high voltage which caused (2) the
    flyback to arc. Or, it may just be a crack in the insulation as someone else

    As a test, you can try insulating the area with several layers of electrical
    tape and/or non-acidic RTV Silicone sealer or HV sealer. If the monitor
    then works normally, a new flyback should take care of it.

    --- sam | Sci.Electronics.Repair FAQ Home Page:
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