Asus G531GT missing vcore and mem 1.2v

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  • floodster1
    Member
    • Mar 2018
    • 26
    • canada
    #1

    Asus G531GT missing vcore and mem 1.2v

    Laptop came with water damage.
    Board was cleaned and I did find any damage or shorts.
    Power rails I have.
    19v rail
    3v rail
    5 rail
    1v pch
    293 mv on memory
    0v on vcore
    1.8 v
    0.812 ov gpu vcore
    1.3v on vmem
    I have a boardview for this board but kind if new with reading scamatics .
    Would buddy have any idea where I need to be looking.
    I appreciate any help I can get.
    😊 thabks
    Tags: None
    • Sephir0th
      Badcaps Legend
      • Oct 2020
      • 1282
      • Germany
      #2
      Re: Asus G531GT missing vcore and mem 1.2v

      Pictures of the exposed areas from before cleaning and after cleaning please, to start with.

      At this point we don't know anything about the board except the VCC Core is missing and only 0.3 volt at the RAM supply(?). Also no resistance measurements shared to get the clue. Add these please.
      FairRepair on YouTube

        Comment

        • floodster1
          Member
          • Mar 2018
          • 26
          • canada
          #3
          Re: Asus G531GT missing vcore and mem 1.2v

          Thanks for the reply.
          the resistor connected to
          The p_DDR_EN_10 was bad.
          In stalled new 620kohm resistor and all voltages
          Are back.
          But theres no video.
          I worked on the same model last week and there sound as well when it post the splash screen wich is missing as well.
          Last edited by floodster1; 09-10-2023, 08:34 AM.

            Comment

            • floodster1
              Member
              • Mar 2018
              • 26
              • canada
              #4
              Re: Asus G531GT missing vcore and mem 1.2v

              Picture of the water damage
              Attached Files

                Comment

                • Sephir0th
                  Badcaps Legend
                  • Oct 2020
                  • 1282
                  • Germany
                  #5
                  Re: Asus G531GT missing vcore and mem 1.2v

                  This was a lot of damage... issue is solved?
                  FairRepair on YouTube

                    Comment

                    • floodster1
                      Member
                      • Mar 2018
                      • 26
                      • canada
                      #6
                      Re: Asus G531GT missing vcore and mem 1.2v

                      No, I have all power rails but no picture.
                      I'm still looking for the problem.
                      All water damage was on the back of the board, there was a lot of damage

                        Comment

                        • floodster1
                          Member
                          • Mar 2018
                          • 26
                          • canada
                          #7
                          Re: Asus G531GT missing vcore and mem 1.2v

                          It seems the memory module that came with laptop is faulty.
                          I changed it and it starts up with splash screen sound.
                          But the other issue is the screen is also cracked.
                          The backlight is on but there's no way to see q picture.
                          I can't seem to get anything on the hdmi port.
                          When disconnect the display and restart the post sound disappears.
                          Attached Files
                          Last edited by floodster1; 09-10-2023, 09:17 AM.

                            Comment

                            • floodster1
                              Member
                              • Mar 2018
                              • 26
                              • canada
                              #8
                              Re: Asus G531GT missing vcore and mem 1.2v

                              Found another screen and its up and running!
                              Had to change the power management chip,2 resistors and one bad cap.
                              I'm amazed, that's all the problems there was.
                              That's the most water damage iv ever came across.
                              Attached Files
                              Last edited by floodster1; 09-10-2023, 10:20 AM.

                                Comment

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