DCL20A screen white out

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  • ninjatek
    New Member
    • Feb 2010
    • 1
    #1

    DCL20A screen white out

    I have a DCL20A when turned on operates normally for about ten seconds and then the screen whites out. The on indicator led remains blue indicating normal operation. If I turn off the display and turn it on again the normal image returns for ten seconds and whites out again.

    I open the casing and noticed two capacitors disfigured. I replaced them and symptoms remain the same.

    If anyone can offer some insight it will be much appreciated.

    top side of board showing disfigured caps.


    bottom of board.


    normal display during first ten seconds.


    display after ten seconds.
    Tags: None
    • Krankshaft
      Badcaps Legend
      • Jan 2007
      • 2328
      • USA
      #2
      Re: DCL20A screen white out

      Were all of the secondary caps replaced?
      Elements of the past and the future combining to make something not quite as good as either.

        Comment

        • EGuevarae
          Badcaps Legend
          • Nov 2008
          • 1336
          • USA
          #3
          Re: DCL20A screen white out

          If all white, the Video/signal board stopped sending signal and all you can see is white because the CCFLs are still on. Or LCD Panel itself is shot.
          Krankshaft is right. You should replace all the secondary side caps
          There are 10 kind of people in this world: those that understand binary, and those who don't.
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            Comment

            • PlainBill
              Badcaps Legend
              • Feb 2009
              • 7034
              • USA
              #4
              Re: DCL20A screen white out

              And check the caps on the logic card. There are typically three voltage regulators there. If the one that supplies the panel shuts down, it could cause this problem. Another possibility is the power supply on the panel board. That one generates the voltages required by the panel.

              PlainBill
              For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

              Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

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