ASUS X751LD internal monitor black screen

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  • digitalblade
    Member
    • Mar 2016
    • 27
    • italy
    #1

    ASUS X751LD internal monitor black screen

    Hi,

    I've a asus laptop with X751LD rev 2.0 MB.
    The laptop screen remain black but if I attach an external monitor on HDMI port I see the bios screen.

    I checked power lines on lvds and i found 18.78v also i don't find any obvious problem.. like shorted caps or mosfet on lvds connector area..

    there is something that I can check to find the problem?

    thank you
    Tags: None
    • JaroTech
      Badcaps Veteran
      • Mar 2015
      • 351
      • Canada
      #2
      Re: ASUS X751LD internal monitor black screen

      Hi, give me the voltage of all the pins of the screen connector. We'll start with that.

        Comment

        • digitalblade
          Member
          • Mar 2016
          • 27
          • italy
          #3
          Re: ASUS X751LD internal monitor black screen

          as first, thank you very much for you support and sorry for the late reply.

          I try do my best to solve the problem on my own... following your suggestion, I checked every single pin and after a lot of troubleshooting I discovered that there are some stranges value on pin 10.

          As first sight I don't see an oxidation on a trace, so i cleaned up the trace, cleaned the pad (that was almost destroyed!) and soldered a wire to rebuild the track and all start work again!!

          Thank you for your suggestion!!

          I leave two pictures attached as reference for other peoples that can have this problem in future.
          Attached Files

            Comment

            • JaroTech
              Badcaps Veteran
              • Mar 2015
              • 351
              • Canada
              #4
              Re: ASUS X751LD internal monitor black screen

              I'm glad you found the problem.

                Comment

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