g7 power issue

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  • rookieme
    Badcaps Veteran
    • Oct 2014
    • 396
    • Greece
    #1

    g7 power issue

    I have a HP g7 with DA0R33MB6F1 .
    At first during usage it seemed to be connected to power but it really was discharging the battery [sometimes].
    BIOS was updated to F26 with no result.
    Now it runs only with a charged battery and if I connect the power I get an orange led that misinformes that battery is charging.
    It cannot run without battery any more.
    At PQ50 pin 3 I get 19V for a while and then nothing or the 11V of the battery if it is connected. [pin 4 has 19V]
    Should I try changing PU9?
    Attached Files
    Last edited by rookieme; 12-21-2014, 01:54 PM.
    Tags: None
    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3572
      • slovakia
      #2
      Re: g7 power issue

      what about voltage on both sides of pr227 and voltage of acdet signal?

        Comment

        • rookieme
          Badcaps Veteran
          • Oct 2014
          • 396
          • Greece
          #3
          Re: g7 power issue

          at pr227 I get 24V but after connecting and disconnecting the battery I get 0,9V both sides.
          acdet is 2,65V

            Comment

            • dycc
              Vision
              • Nov 2011
              • 624
              • Côte d'Ivoire
              #4
              Re: g7 power issue

              Try to change pu9 bq738=bq728=bq735=bq725

                Comment

                • atsio
                  Badcaps Veteran
                  • Oct 2013
                  • 819
                  • Greece
                  #5
                  Re: g7 power issue

                  Remove and check pq48 and pq50. Check resistance relative to ground on pins of pq48.

                    Comment

                    • rookieme
                      Badcaps Veteran
                      • Oct 2014
                      • 396
                      • Greece
                      #6
                      Re: g7 power issue

                      Originally posted by atsio
                      Remove and check pq48 and pq50. Check resistance relative to ground on pins of pq48.
                      both of them seem to work ok.
                      resistance at pq48 [board only without pq48 and at 180 C temp]
                      1,2,3 ~ 1,5 Kohm
                      4 ~ 63 K
                      5,6,7,8 ~ 75 K

                      resistance at pq48 with it at low temp
                      1,2,3 ~ 300 Kohm
                      4 ~ 1 M
                      5,6,7,8 ~ 7,75 M

                        Comment

                        • rookieme
                          Badcaps Veteran
                          • Oct 2014
                          • 396
                          • Greece
                          #7
                          Re: g7 power issue

                          could it be a bad solder somewhere as the problem is no permanet?
                          it works ok for a few seconds/ minutes and then it just hangs

                            Comment

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