Quanta R75 Laptop motherboard short, how to isolate

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  • thanibee
    Member
    • Nov 2016
    • 22
    • India
    #1

    Quanta R75 Laptop motherboard short, how to isolate

    I have a laptop motherboard in which the S5 power line is shorted to ground. The output generated is going through a power jumper pad. How do I isolate the generation point and the rest of the circuit? Do I need to cut the line or is there any other way?
    Attached Files
    Last edited by SMDFlea; 03-15-2023, 04:29 AM. Reason: Quanta R75
    Tags: None
    • Sephir0th
      Badcaps Legend
      • Oct 2020
      • 1262
      • Germany
      #2
      Re: Laptop motherboard short, how to isolate

      With PJP5 is probably this area meant. And as you notice it is physically not present on your board. The "*" in the description also indicates it is not present. The test point has likely nothing to do with the +5VS. You have to lift the related coil instead, so you can at least confirm whether the short is on buck converter or on the load side
      Attached Files
      FairRepair on YouTube

        Comment

        • thanibee
          Member
          • Nov 2016
          • 22
          • India
          #3
          Re: Laptop motherboard short, how to isolate

          Originally posted by Sephir0th
          With PJP5 is probably this area meant. And as you notice it is physically not present on your board. The "*" in the description also indicates it is not present. The test point has likely nothing to do with the +5VS. You have to lift the related coil instead, so you can at least confirm whether the short is on buck converter or on the load side
          Thanks, that is what I thought after posting this.

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