HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

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  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india
    #1

    HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

    Model Hp Dv6-6000
    Platform-HPMH-41-AB6200-D00G

    All voltage rails are present,Dc jack Light glows.
    Problem: If i lift U22(Ec Eeprom) and resolder it, m/b starts switching and botts as well but if i switch it off for 10 mins,it refuses to switch again.

    What i have done so far:
    1. I have flashed both the eeproms with working dump from another m/b,still same.

    2. Changed eeprom chips,still same

    3. Changed kbc IT8518,still same.

    I have not noticed any difference in voltages around u22 when it boots and when it doesnt switches.

    What can be the reason friends??

    I seek your advice as i'm really puzzled with this strange case.
    Tags: None
    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india
      #2
      Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

      Not ati graphics issue as i tried with cooversion from ati to intel-behaviour remains same.

        Comment

        • sourcebf
          Badcaps Veteran
          • Jul 2016
          • 431
          • N/A
          #3
          Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

          What is the component under u22 ( back side of the motherboard )
          Super I/o ??

            Comment

            • sourcebf
              Badcaps Veteran
              • Jul 2016
              • 431
              • N/A
              #4
              Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

              resolder super i/o or any component close u 22

                Comment

                • mcplslg123
                  Badcaps Legend
                  • Jun 2015
                  • 7262
                  • india
                  #5
                  Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

                  SIO is near U22 and not on back side. I have already replaced Sio and it is from working m/b. i have checked connectivity of sio pins and all are fine. No corrosion near sio or U22 or even back side. I have re-soldered all the components near and below U22. All resistance ratings in this area matches with working m/b.

                  What next??

                    Comment

                    • raajkumar
                      Badcaps Veteran
                      • Mar 2015
                      • 354
                      • Srilanka
                      #6
                      Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

                      I have same issue on DV6-600- HPMH-41-AB6300. Its not power on. i checked there was no 5v out from PU4. I just removed and checked PQ115 but it is working. I solder it again. Now the power is coming laptop is working without any problem. if i switch off it again and remove the power adapter. the same problem coming again.

                        Comment

                        • piernov
                          Super Moderator
                          • Jan 2016
                          • 4435
                          • France
                          #7
                          Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

                          What are the voltage on pin 16, 24, 13, 1, 7 and 8 of PU4? Voltage on pin 2 of PQ113?
                          You could try to replace PU4.
                          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                            Comment

                            • raajkumar
                              Badcaps Veteran
                              • Mar 2015
                              • 354
                              • Srilanka
                              #8
                              Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

                              Originally posted by piernov
                              What are the voltage on pin 16, 24, 13, 1, 7 and 8 of PU4? Voltage on pin 2 of PQ113?
                              You could try to replace PU4.
                              I solved the problem on this board. Problem found on PU4 and PU2. I replaced PU4 and switched on and i found PU2 gets hot. So i replaced it also. Now the problem solved. Thanks for ideas.

                                Comment

                                • mahmoodjavan
                                  Banned
                                  • Mar 2018
                                  • 584
                                  • iran
                                  #9
                                  Re: HP DV6-6000 HPMH-41-AB6200 Strange Behaviour

                                  Model Hp Dv6-6000
                                  Platform-HPMH-41-AB6200-D00G
                                  Attached Files

                                    Comment

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