hp 15-g LA-A996P turn off after 5 sec

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  • menshawy
    Badcaps Veteran
    • Aug 2013
    • 400
    • egypt
    #1

    hp 15-g LA-A996P turn off after 5 sec

    hi
    hp 15-g amd
    mb la-a996p
    when i press power button ..power led lighting but turn off after 5 sec
    spi (u2) pin 8 not short with gnd
    but 1.35 (plm2) is absent i replaced pum1 (RT8207MZQW) but no result
    can any one help me pkz
    thanks for all
    Attached Files
    Last edited by menshawy; 08-25-2019, 04:49 PM.
    Tags: None
    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France
      #2
      Re: hp 15-g LA-A996P turn off after 5 sec

      +1.35V_VDDQ is enabled by the S5 pin (n°7) of PUM1, coming from SYSON. So check this signal is present.
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • menshawy
          Badcaps Veteran
          • Aug 2013
          • 400
          • egypt
          #3
          Re: hp 15-g LA-A996P turn off after 5 sec

          Originally posted by piernov
          +1.35V_VDDQ is enabled by the S5 pin (n°7) of PUM1, coming from SYSON. So check this signal is present.
          thanks friend
          PUM1 pin8 SYSON 0V its connected with pin2 of PRM9
          prm9 is 30k ok pin1 of it is connected with rp2
          rp2 100k ok
          rp2 pin8 +3VALW_EC ok
          pin5.6.7 gnd
          pin4 SYSON 0V
          rp2 pin8.prm9 pin1 and u44(sio) pin95 is connected on the same line and its volt is 0v

            Comment

            • piernov
              Super Moderator
              • Jan 2016
              • 4435
              • France
              #4
              Re: hp 15-g LA-A996P turn off after 5 sec

              Are you measuring when you press power button?
              OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                Comment

                • menshawy
                  Badcaps Veteran
                  • Aug 2013
                  • 400
                  • egypt
                  #5
                  Re: hp 15-g LA-A996P turn off after 5 sec

                  Originally posted by piernov
                  Are you measuring when you press power button?
                  yes

                    Comment

                    • menshawy
                      Badcaps Veteran
                      • Aug 2013
                      • 400
                      • egypt
                      #6
                      Re: hp 15-g LA-A996P turn off after 5 sec

                      thanks all
                      problem solved by reflow APU

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