Missing components on motherboard (newbie question)

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  • Good2Know
    Member
    • Feb 2024
    • 23
    • Germany

    #1

    Missing components on motherboard (newbie question)

    Having some trouble understanding how compnents like resistors /caps etc that are present in board view and schematics but are missing on the actual board iam troubleshooting.
    In my case its about some resistors /caps around the charging ic.

    Click image for larger version  Name:	grafik.png Views:	0 Size:	229.4 KB ID:	3248476


    For example PR321 H_PROCHOT, since its an essential signal, how can the charging ic talk to the sio if there is no connection ?
  • Answer selected by Good2Know at 04-08-2024, 10:10 AM.
    piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    @ means no stuff. Resistor symbol with line under it means bridged on the PCB.

    Comment

    • SMDFlea
      Super Moderator
      • Jan 2018
      • 20551
      • UK

      #2
      Post your motherboard model number and revision number. Post a LINK to the schematic/boardview if it is already posted in the schematic requests sub forum - https://www.badcaps.net/forum/troubl...-requests-only
      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

      Comment

      • Good2Know
        Member
        • Feb 2024
        • 23
        • Germany

        #3
        My board:
        LA-E921P
        Rev 1B

        Schematic in use
        LA-E921P
        Rev 1A

        Think i got both schematic/boardview from external site.

        Comment

        • piernov
          Super Moderator
          • Jan 2016
          • 4435
          • France

          #4
          @ means no stuff. Resistor symbol with line under it means bridged on the PCB.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

          Comment

          • Good2Know
            Member
            • Feb 2024
            • 23
            • Germany

            #5
            Thank you very much for the clear cut answer.
            This helped me a lot.

            I checked some test points and yes indeed, there is connection where i thought could not be because of the missing resistor.
            May you have a very good day.





            Comment

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