hp 15 LA-G07DP No vcc core

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  • reset1986
    Badcaps Veteran
    • Dec 2014
    • 308
    • italia

    #1

    hp 15 LA-G07DP No vcc core

    hi all, I have this motherboard supplied with the PU1001 regulator sy8286R burned, replaced the pc turns on, the fan starts but from black screen, replaced ram, flash bios not solved, core vcc missing, SY8286R generates the primary voltage of 1V as from diagram h measured all the voltages and they seem ok, but the core vcc and the pc are missing from a black screen with 5 long and 3 short LEDs, advice?
    Attached Files
  • mon2
    Badcaps Legend
    • Dec 2019
    • 13887
    • Canada

    #2
    Re: hp 15 LA-G07DP No vcc core

    Internet is reporting that this sequence of light codes = BIOS fault.

    https://h30434.www3.hp.com/t5/Notebo...t/td-p/6997697

    Comment

    • reset1986
      Badcaps Veteran
      • Dec 2014
      • 308
      • italia

      #3
      Re: hp 15 LA-G07DP No vcc core

      Originally posted by mon2
      Internet is reporting that this sequence of light codes = BIOS fault.

      https://h30434.www3.hp.com/t5/Notebo...t/td-p/6997697

      I found a bios and programmed, but the situation does not change, I make requests in the bios section and I attach my backup, I update the post

      Comment

      • reset1986
        Badcaps Veteran
        • Dec 2014
        • 308
        • italia

        #4
        Re: hp 15 LA-G07DP No vcc core

        Originally posted by mon2
        Internet is reporting that this sequence of light codes = BIOS fault.

        https://h30434.www3.hp.com/t5/Notebo...t/td-p/6997697
        i tried a file with the same BID version and XMC chip, always the same result, missing vcc core, measured PUZ1
        RT3602AEGQW

        VR_ON 5v
        VR_PWRGD 1v
        vin 19 ok
        + 5VALW ok

        Comment

        • mcplslg123
          Badcaps Legend
          • Jun 2015
          • 7262
          • india

          #5
          Re: hp 15 LA-G07DP No vcc core

          UC6,pin6 voltage present?? Its not populated. Chances of SOC getting damaged is high as 1.0V_PRIM goes to CPU.

          Comment

          • reset1986
            Badcaps Veteran
            • Dec 2014
            • 308
            • italia

            #6
            Re: hp 15 LA-G07DP No vcc core

            Originally posted by mcplslg123
            UC6,pin6 voltage present?? Its not populated. Chances of SOC getting damaged is high as 1.0V_PRIM goes to CPU.
            uc6 is not soldered on the motherboard, 1.0V_Prim is generated by the replaced ic and is present

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india

              #7
              Re: hp 15 LA-G07DP No vcc core

              I know its not soldered and i do mentioned that. Still interested in voltage on pin6 of UC6. The pads are of course there on mb where you can measure it.

              Comment

              • DanielDacko
                Badcaps Veteran
                • Mar 2015
                • 325
                • Macedonia

                #8
                Re: hp 15 LA-G07DP No vcc core

                Pretty sure that +19V went straight to the CPU and damaged it. However, take a look to this image, maybe it will help you.
                Attached Files
                I don't provide help for people using CH341A and a clip.

                Comment

                • reset1986
                  Badcaps Veteran
                  • Dec 2014
                  • 308
                  • italia

                  #9
                  Re: hp 15 LA-G07DP No vcc core

                  Originally posted by mcplslg123
                  I know its not soldered and i do mentioned that. Still interested in voltage on pin6 of UC6. The pads are of course there on mb where you can measure it.
                  thank you, in the end I returned it without any repairs

                  Comment

                  • reset1986
                    Badcaps Veteran
                    • Dec 2014
                    • 308
                    • italia

                    #10
                    Re: hp 15 LA-G07DP No vcc core

                    Originally posted by DanielDacko
                    Pretty sure that +19V went straight to the CPU and damaged it. However, take a look to this image, maybe it will help you.
                    thanks

                    Comment

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