HP Compaq CQ40 LA-4101P No Power Issue, Please Help

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  • chrizzclo
    Member
    • Aug 2014
    • 17
    • Indonesia
    #1

    HP Compaq CQ40 LA-4101P No Power Issue, Please Help

    Hello, Please Help Me
    Today I got CQ40 notebook that if I pressed power button, only white power led turn on, the others like wifi, touchpad no light.
    After checked, I get this measurement :

    LID_SW (16) - 3.3V
    ACIN (127) - 1V (not stable, drop)
    VCC (9) - 3.3V
    ON / OFF # (32) - 3.1V / 3.3V
    EC_RST # (37 ) - 1.8V
    ACOFF (27) - 0V

    OFF / ON
    PM_SLP_S3 # (6) - 0V / 0V
    PM_SLP_S5 # (14) - 0V / 0V
    EC_RSMRST # (100) - 0V / 3.3V
    SYSON (95) - 0V / 0V
    VR_ON (121) - 0V / 0V
    SUSP # (116) - 0V / 0V

    This is the schematic :
    Attached Files
    Tags: None
    • chrizzclo
      Member
      • Aug 2014
      • 17
      • Indonesia
      #2
      Re: HP Compaq CQ40 LA-4101P No Power Issue, Please Help

      Anyone?

        Comment

        • dspok
          Badcaps Veteran
          • Jan 2014
          • 553
          • Nepal
          #3
          Re: HP Compaq CQ40 LA-4101P No Power Issue, Please Help

          PQ103 was brunt, changed it.
          Now it is not taking charge, if I plug in ac 1st and insert battery it charge but if I put battery and plugin ac it doesn't charge and PQ103 overheats.

          Please somebody help to solve it. Changed BQ24740 no effect.

            Comment

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