HP G62 start in loop

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  • rtstorm
    Badcaps Veteran
    • Feb 2012
    • 971
    • Croatia

    #1

    HP G62 start in loop

    Hello i have HP G62 (G62-b61SG) (MB P/N 01013TM00-600-G). When i plug in the adapter laptop blink and spin for 1 sec the off and then again blink and spin and in infinite loop.

    I try to replace the bios but that did not help. It have AMD GPU and Chipset.

    Do you have any schematics and did you ever see this kind of issue?
    ...the quieter you become the more you are able to hear...
  • rtstorm
    Badcaps Veteran
    • Feb 2012
    • 971
    • Croatia

    #2
    Re: HP G62 start in loop

    I think i found schematics, i check the MAXIM IC and all look ok except pin 23 and 24 of PU5 (MAXIM 8731AE) they are 1.1V

    i found this at maxim schematics

    23 LX H i g h- S i d e P ow erM OS FE T D r i verS our ce C onnecti on. C onnect to the sour ce of the hi g h- si d e n- channel
    M OS FE T.
    24 DHI High-Side Power MOSFET Driver Output. Connect to the high-side n-channel MOSFET gate
    Attached Files
    ...the quieter you become the more you are able to hear...

    Comment

    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3574
      • slovakia

      #3
      Re: HP G62 start in loop

      check for shorts on gpu and nb rails

      Comment

      • rtstorm
        Badcaps Veteran
        • Feb 2012
        • 971
        • Croatia

        #4
        Re: HP G62 start in loop

        i find that problem is in 5V rail on PU11, i constantly drops to 0V.
        ...the quieter you become the more you are able to hear...

        Comment

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