Toshiba Satellite L775 white screen

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  • p1muserfan
    Senior Member
    • Apr 2014
    • 184
    • USA

    #1

    Toshiba Satellite L775 white screen

    Have a Satellite L775 Intel board with a white screen. When I first acquired the machine about a 3rd of the lcd was a different shade. Then about 2 days later the screen went completely white. External monitor has been fine all along. Voltages at LCD connector on board are as follows:
    1. 19
    2. 19
    3. 3.3
    4. Ground
    5. 0
    6. 0
    7. Ground
    8. 0
    9. 0
    10. Ground
    11. 1.1
    12. 1.2
    13. Ground
    14. 1.7
    15. 0
    16. Ground
    17-20. 3.3

    Have not been able to get a hold of a schematic for this board, heard it's a Pegatron that hasn't been released. Flying completely blind with this.
    Question is, is this anything but a bad video chip and therefore a reflow attempt?
    Attached Files
  • p1muserfan
    Senior Member
    • Apr 2014
    • 184
    • USA

    #2
    Re: Toshiba Satellite L775 white screen

    Edit: forgot to say that I have tried 3 different cables with the same result

    Comment

    • diif
      Badcaps Legend
      • Feb 2014
      • 6978
      • England

      #3
      Re: Toshiba Satellite L775 white screen

      Have you tried another screen ? I would have thought if the video chip was bad then there would be no picture on the external monitor.

      Comment

      • p1muserfan
        Senior Member
        • Apr 2014
        • 184
        • USA

        #4
        Re: Toshiba Satellite L775 white screen

        Originally posted by diif
        Have you tried another screen ? I would have thought if the video chip was bad then there would be no picture on the external monitor.
        Same thing on different screen, that's why I posted the voltages, got a feeling I'm missing voltage on some of those connector pins. And without a damn schematic I have no idea what voltage should be where...

        Comment

        • p1muserfan
          Senior Member
          • Apr 2014
          • 184
          • USA

          #5
          Re: Toshiba Satellite L775 white screen

          Anybody else have an idea about the voltages on the connector? Are they o.k.?

          Comment

          • angel-boy
            Badcaps Veteran
            • Jan 2013
            • 550
            • Romania

            #6
            Re: Toshiba Satellite L775 white screen

            You can try just hot air, to see if he returns image, without flux paste, only air

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870

              #7
              Re: Toshiba Satellite L775 white screen

              Beed a better picture of the board and is there a panel board on th epanel
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

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