HP 15-g092sa / LA-A996p dead

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  • artois7
    Senior Member
    • Mar 2011
    • 159
    #1

    HP 15-g092sa / LA-A996p dead

    Hi all,

    Been a while since I've looked at a broken laptop.

    Got a HP 15-g092SA (LA-A996P mobo with AMD A8 CPU) here for a family friend, no signs of life / no power.

    No short across the DC jack, but only reading ~~0.7v plugged in so something is shorted.

    Can't find a schematic or obvious reference points on the board. Any experience with these? Surface mount CPU, might hit it with some heat and see if reflowing makes a difference.
    Tags: None
    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France
      #2
      Re: HP 15-g092sa / LA-A996p dead

      Don't mess with the CPU until you've ruled out everything else.
      Especially here, if you think that something is shorted in the B+ line, you must find the shorted component, reflowing the CPU won't magically relieve the short.

      First make sure that it's not a continuity problem like a broken DCIN jack. (or connector on the motherboard)
      Second, check if the actual short is on the VIN or B+ line.
      If you don't see any obviously burnt or bad looking component, you'll have to inject a voltage with a PSU to the shorted line (start with 1V) and find the component which is heating up.

      Schematics attached, was pretty easy to find on Google…
      Attached Files
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • mcplslg123
          Badcaps Legend
          • Jun 2015
          • 7262
          • india
          #3
          Re: HP 15-g092sa / LA-A996p dead

          This mobo is notorious for 3v regulator fail. So check it first.

            Comment

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