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elitebook 8760W laptop which has a problem with charging

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    elitebook 8760W laptop which has a problem with charging

    Hello can you help

    I have a hp elitebook 8760W laptop which has a problem with charging / the problem is in charge but the charge rate remains 0% / the battery and charger were replaced too, and I changed the BQ 726 it remained the same problem
    I attached pictures of the problem

    These are the special voltages in BQ 726
    Pin voltage
    1 = 19.06
    2 = 19.06
    3 = 19.41
    4 = 19.41
    5 = 3.341
    6 = 2.671
    7 = 0
    8 = 3.360
    9 = 3.360
    10 = 3.348
    11 = 0.147
    12 = 0
    13 = 0
    14 = 0
    15 = 0
    16 = 6.038
    17 = 5.841
    18 = 0
    19 = 0
    20 = 18.33

    Please help, thank you
    Attached Files
    Mohammed Mohan

    #2
    Re: elitebook 8760W laptop which has a problem with charging

    Did the laptop run properly from the "new" battery (AC adapter disconnected, when the battery was still charged) and did it report percentage properly?
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment


      #3
      Re: elitebook 8760W laptop which has a problem with charging

      A good battery was placed on another laptop and the laptop was tested on the battery without a charger and when the charger is connected the charge percentage does not increase
      Mohammed Mohan

      Comment


        #4
        Re: elitebook 8760W laptop which has a problem with charging

        ACDRV is not working. Check your first 2 dc-in mosfets and the voltage divider circuit for gate pin.

        Comment


          #5
          Re: elitebook 8760W laptop which has a problem with charging

          Remove "Q14" MOSFET and check on I.C pin NO:- 4 (ACDRV) voltage = ?

          Comment


            #6
            Re: elitebook 8760W laptop which has a problem with charging

            Originally posted by qayyum786 View Post
            Remove "Q14" MOSFET and check on I.C pin NO:- 4 (ACDRV) voltage = ?


            I removed Q14 "MOSFET

            This is voltage 4 (ACDRV) voltage = 25.83
            Mohammed Mohan

            Comment


              #7
              Re: elitebook 8760W laptop which has a problem with charging

              Originally posted by mcplslg123 View Post
              ACDRV is not working. Check your first 2 dc-in mosfets and the voltage divider circuit for gate pin.

              Thanks for replying, can you clarify more?
              This is voltage 4 (ACDRV) = 25.83
              Mohammed Mohan

              Comment


                #8
                Re: elitebook 8760W laptop which has a problem with charging

                R83 rasistor value = ?

                Comment


                  #9
                  Re: elitebook 8760W laptop which has a problem with charging

                  Originally posted by mohammed mohan View Post
                  Thanks for replying, can you clarify more?
                  This is voltage 4 (ACDRV) = 25.83
                  Is this voltage after removing Q14 mosfet?? Your post#1 shows it at 19V. Can you clarify??

                  Comment


                    #10
                    Re: elitebook 8760W laptop which has a problem with charging

                    replace ic harging and mosfet too

                    Comment


                      #11
                      Re: elitebook 8760W laptop which has a problem with charging

                      Thank you my friends
                      A bug \ "Q14" was found to be replaced by MOSFET
                      Mohammed Mohan

                      Comment


                        #12
                        Re: elitebook 8760W laptop which has a problem with charging

                        Originally posted by qayyum786 View Post
                        Remove "Q14" MOSFET and check on I.C pin NO:- 4 (ACDRV) voltage = ?

                        Comment

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