HP DV6 cannot turn on

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  • String2016
    Badcaps Legend
    • Nov 2015
    • 2229
    • philippines

    #1

    HP DV6 cannot turn on

    I need help on this hp dv6 11A39-2
    48.4RH08.021, the problem is pressing power button nothing happens,but plugged in the charger lights is present on the charging,I check Cn_PBTN6 pin 5 DB_PWRBTN# there is 3.3v and on U10 kbc PIN 125 there is 3.3v, Ive noticed there is no RSMRST# pin96 on kbc,pressing the power button voltage response 3.3v to 0 then 3.3v but laptop is not spinning, anyone can help on this please
  • lapfix
    Badcaps Legend
    • Mar 2020
    • 2672
    • my workshop

    #2
    Re: HP DV6 cannot turn on

    First , try with another original charger

    Comment

    • String2016
      Badcaps Legend
      • Nov 2015
      • 2229
      • philippines

      #3
      Re: HP DV6 cannot turn on

      @lapfix i already tried 2 original hp charger

      Comment

      • String2016
        Badcaps Legend
        • Nov 2015
        • 2229
        • philippines

        #4
        Re: HP DV6 cannot turn on

        current drawn on lab bench 0.005 amps

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13917
          • Canada

          #5
          Re: HP DV6 cannot turn on

          Post any schematics/boardview files if you have them.

          Any liquid damage?

          If not, post clear close up pix for the logic board near the dcin connector.

          Power down and check the resistance to ground on all coils.

          Comment

          • String2016
            Badcaps Legend
            • Nov 2015
            • 2229
            • philippines

            #6
            Re: HP DV6 cannot turn on

            thanks attached is the schematic and picture
            Attached Files

            Comment

            • String2016
              Badcaps Legend
              • Nov 2015
              • 2229
              • philippines

              #7
              Re: HP DV6 cannot turn on

              i check pc78 pc88 pc84 pc100 for short pc 100 is shorted i will try to replaced if the prob is gone

              Comment

              • String2016
                Badcaps Legend
                • Nov 2015
                • 2229
                • philippines

                #8
                Re: HP DV6 cannot turn on

                Replacing pc 100 still same issue cannot turn on

                Comment

                • String2016
                  Badcaps Legend
                  • Nov 2015
                  • 2229
                  • philippines

                  #9
                  Re: HP DV6 cannot turn on

                  Anyone can help on this please

                  Comment

                  • mon2
                    Badcaps Legend
                    • Dec 2019
                    • 13917
                    • Canada

                    #10
                    Re: HP DV6 cannot turn on

                    1) Study page 40 of your posted schematics. Any chance you have the boardview file for this logic board? Please post it if you do.

                    2) post the voltage readings with your external adapter attached. Check if the power switch is working or not on location 4.

                    3) With the reported 5 mA current draw from your power supply, your DCIN to logic board is not working. Issue is most likely on page 40 of the schematics.
                    Attached Files

                    Comment

                    • String2016
                      Badcaps Legend
                      • Nov 2015
                      • 2229
                      • philippines

                      #11
                      Re: HP DV6 cannot turn on

                      all that mentioned at page 40 have voltages, i flashed the bios not the amps is drawing 0.003 and when i press the power button it goes to 0.007

                      Comment

                      • SMDFlea
                        Super Moderator
                        • Jan 2018
                        • 20550
                        • UK

                        #12
                        Re: HP DV6 cannot turn on

                        have you checked the power jack and the AD_ID circuit
                        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                        Comment

                        • String2016
                          Badcaps Legend
                          • Nov 2015
                          • 2229
                          • philippines

                          #13
                          Re: HP DV6 cannot turn on

                          @smdflea pin 5 on the dc in ADP_ID has 0.965v

                          Comment

                          • String2016
                            Badcaps Legend
                            • Nov 2015
                            • 2229
                            • philippines

                            #14
                            Re: HP DV6 cannot turn on

                            Ive checked PU9 3v5v chip tps51125 ON PIN 8 VGEG3 has 3.3v on pin16vin has 19v but on pin 23 PGOOD has 0v, I noticed also the two resistor PR68 AND PR69 on PR68 resistance has only 14.5k supposed to be 22k on schematic, on PR69 resistances has only 25.5k supposed to be 32k on schematic, and there is no standby 5v but pressing power button amps draw on bench lab 0.008 on Pr69 other side has 5v but other has 2v only on PR 68 other which ground 0v and other side is 2v only.could this chip or resistor is faulty?

                            Comment

                            • lapfix
                              Badcaps Legend
                              • Mar 2020
                              • 2672
                              • my workshop

                              #15
                              Re: HP DV6 cannot turn on

                              DV6 has a common fault : Graphic...if you have a graphic chip try to converted and see it your problem is solved

                              Comment

                              • String2016
                                Badcaps Legend
                                • Nov 2015
                                • 2229
                                • philippines

                                #16
                                Re: HP DV6 cannot turn on

                                @lapfix this board has no graphic chip non graphic version uma

                                Comment

                                • mielta
                                  Badcaps Veteran
                                  • Apr 2015
                                  • 368
                                  • Germany

                                  #17
                                  Re: HP DV6 cannot turn on

                                  Hi
                                  open PJP12 Jumper and messure resistance on both side

                                  Comment

                                  • String2016
                                    Badcaps Legend
                                    • Nov 2015
                                    • 2229
                                    • philippines

                                    #18
                                    Re: HP DV6 cannot turn on

                                    @MIELTA pjp12 no component on the board
                                    Attached Files
                                    Last edited by String2016; 05-18-2021, 02:54 AM.

                                    Comment

                                    • mielta
                                      Badcaps Veteran
                                      • Apr 2015
                                      • 368
                                      • Germany

                                      #19
                                      Re: HP DV6 cannot turn on

                                      right it is only an solderjoint

                                      Comment

                                      • String2016
                                        Badcaps Legend
                                        • Nov 2015
                                        • 2229
                                        • philippines

                                        #20
                                        Re: HP DV6 cannot turn on

                                        on the image where is the soldere joint?

                                        Comment

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