Hp 15 daor62mb6e1 rev e missing +vcc gfx

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  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #1

    Hp 15 daor62mb6e1 rev e missing +vcc gfx

    MODEL HP PAVILLION 15
    M/B- DAOR62MB6E1 REV E
    PROBLEM: Missing +VCC GFX Voltage on PL37 Coil.

    What I have tried:

    01 Flashed both the eeprom with dumps from this forum.
    02 Replaced PU 13/15/16/17
    03. Replaced processor+Ram

    Still same, Laptop switches, fan spins as usual, all voltage rails are present except Vcc Gfx.

    Need your assistance friends.
  • piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    #2
    Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

    Does the laptop seem to boot? CPU_PLTRST#_R present?
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment

    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india

      #3
      Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

      Laptop doesnt boot. CPU_PLTRST#_R Present. Checked at R460/R461. Its 1.1v

      Comment

      • mcplslg123
        Badcaps Legend
        • Jun 2015
        • 7262
        • india

        #4
        Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

        I have 2 laptops of this particular model with exact same fault-missing vcc gfx voltage. 2nd one is Uma, so likely not a graphics issue with the first one as well.

        Bit urgent help needed,if possible. I know we all are located across the globe with different time zone and all are busy but still request advice asap.

        Comment

        • mcplslg123
          Badcaps Legend
          • Jun 2015
          • 7262
          • india

          #5
          Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

          Help please guys

          Comment

          • piernov
            Super Moderator
            • Jan 2016
            • 4435
            • France

            #6
            Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

            No idea, do you have a POST diagnostic card? Or if you have an oscilloscope, check for any activity on the BIOS ROM CS# pin. Also make sure that you have all the other CPU voltages (+1.05V_VTT, +1.8V, +1.5V_CPU, +VCCSA I think).
            Last edited by piernov; 09-06-2017, 09:56 AM.
            OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india

              #7
              Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

              +1.05v VTT/1.8V/1.5V/VCCSA/0.60V/.075V/0.90V PRESENT. I dont have an oscilloscope to check.

              Comment

              • mcplslg123
                Badcaps Legend
                • Jun 2015
                • 7262
                • india

                #8
                Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

                Thanks to all of you specially Piernov for support. I have solved the problem of missing +vcc_gfx voltage on Pl37. Solution is attached as screenshot. PR284 Bad.
                Attached Files

                Comment

                • piernov
                  Super Moderator
                  • Jan 2016
                  • 4435
                  • France

                  #9
                  Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

                  Ok nice to see that you fixed it, I was on the wrong track… Still surprised that this resistor can die, thanks for the info.
                  OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                  Comment

                  • mcplslg123
                    Badcaps Legend
                    • Jun 2015
                    • 7262
                    • india

                    #10
                    Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

                    Originally posted by piernov
                    Ok nice to see that you fixed it, I was on the wrong track… Still surprised that this resistor can die, thanks for the info.
                    I too didnt doubted it and thats why perhaps wasted so much time to fix it.

                    Comment

                    • afrojuju1
                      New Member
                      • Sep 2018
                      • 1
                      • nigeria

                      #11
                      Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

                      Originally posted by mcplslg123
                      Thanks to all of you specially Piernov for support. I have solved the problem of missing +vcc_gfx voltage on Pl37. Solution is attached as screenshot. PR284 Bad.
                      hello sir
                      plz were is d resistor location in my daor62mb6e1 thax

                      Comment

                      • fixfixit
                        Member
                        • Jun 2010
                        • 14
                        • Sri Lanka

                        #12
                        Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

                        Originally posted by mcplslg123
                        Thanks to all of you specially Piernov for support. I have solved the problem of missing +vcc_gfx voltage on Pl37. Solution is attached as screenshot. PR284 Bad.
                        Thank you, it's a very useful tip!

                        Comment

                        • ktmmotocross
                          Boardkiller
                          • Feb 2014
                          • 3578
                          • slovakia

                          #13
                          Re: Hp 15 daor62mb6e1 rev e missing +vcc gfx

                          how did u find that fault?

                          Comment

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