MSI MS-16J9 - No power

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  • tommy97
    Senior Member
    • Mar 2023
    • 143
    • United Kingdom
    #1

    MSI MS-16J9 - No power

    Hello everyone, i have problem with MSI MS-16J9, board model: MS-16J91 Ver:1.0, in attachment you can find brd and schematics.

    19.5V 0AMP Draw, checked few main points (I'm not expert in laptop board repairs, your help would be appreciated).

    Power/charger light are missing, there is no reaction on power button. Tried BIOS reflash, no difference.

    What should i check next or before?

    PWR_SRC PC213 - 19.5
    PQ41 19.5 Only on pin 5 (Not shorted to the ground)


    -------
    TPS51225CRUKR_QFN20
    VBST2 (4.7V)
    LL2 +3VSUS (0V Missing)
    EN1 - MISSING
    EN2 - MISSING
    VERG5 5V (+5AVALW)
    VERG3 3.3V (+3VALW)

    VBST1 (0v) - CLOSE TO HIGH SIDE MOSFET PWR_SRC MISSING

    --------

    PQ6 - 19.5 / Leg 4 8.5v
    PQ8 - 19.5 / LEG 4 8.1V
    PC39 -19.5
    SDC_IN+ PRESENT

    Schematic - https://www.badcaps.net/forum/showthread.php?t=84710
    .
    Last edited by SMDFlea; 09-29-2023, 03:34 AM.
    Tags: None
    • Sephir0th
      Badcaps Legend
      • Oct 2020
      • 1255
      • Germany
      #2
      Re: MSI MS-16J9 - No power

      Check whether you have 3.3V at the PWR_SW# to start with.
      FairRepair on YouTube

        Comment

        • tommy97
          Senior Member
          • Mar 2023
          • 143
          • United Kingdom
          #3
          Re: MSI MS-16J9 - No power

          Sorted, that was problem with KBC.

            Comment

            • mon2
              Badcaps Legend
              • Dec 2019
              • 13832
              • Canada
              #4
              Re: MSI MS-16J9 - No power

              problem with KBC.
              Can you post more details? It will be appreciated by future readers.

                Comment

                • madjid911
                  Badcaps Veteran
                  • Dec 2016
                  • 364
                  • France
                  #5
                  Re: MSI MS-16J9 - No power

                  I have the same laptop, no power, I found u29 in shorts, after removing the u29 chip, I have no more shorts and I find the 3V 5V. can you tell me what this chip is for? on the motherboard it says E2500, but on the diagram it says E2400, which one should I order please?

                  https://fr.aliexpress.com/item/40008...d=JgeSaJpXfLs7

                  https://fr.aliexpress.com/item/10050...970014161410_2

                    Comment

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