[Help] Finding dGPU memory strap on lenovo g40 45 laptop

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  • julianmustofa
    Member
    • Dec 2021
    • 39
    • indonesia

    #1

    [Help] Finding dGPU memory strap on lenovo g40 45 laptop

    Hi all i've been repairing discrete gpu on laptop lenovo g40 45
    The memory vram fail. And i decided to replace it
    The original memory is skHynix and i only have micron to replace
    But i'am struggling with memory strap
    I have an schematic but its unclear where the exact location to instal 10k resistors
    I also have the boardview but it's pdf version (not .brd or something like that)
    So basically it only show image and pad name no detail information

    Is there posible way to find where this strap location?
    I provided link for schematics
    Thanks
    Schematics: https://drive.google.com/file/d/1Iiz...0lnvz6hHJ/view
    Boardview PDF: https://drive.google.com/file/d/1J4K...sQ8PbSA9C/view
    Attached Files
    Last edited by piernov; 04-14-2023, 02:24 AM.
  • JaroTech
    Badcaps Veteran
    • Mar 2015
    • 351
    • Canada

    #2
    Re: [Help] Finding dGPU memory strap on laptop

    Hi, what is the size of your Micron memory, 1G or 2G?

    Comment

    • julianmustofa
      Member
      • Dec 2021
      • 39
      • indonesia

      #3
      Re: [Help] Finding dGPU memory strap on laptop

      Originally posted by JaroTech
      Hi, what is the size of your Micron memory, 1G or 2G?
      It's 2G micron
      The original memory was also 2G (skHynix)

      Comment

      • piernov
        Super Moderator
        • Jan 2016
        • 4435
        • France

        #4
        Re: [Help] Finding dGPU memory strap on lenovo g40 45 laptop

        They are not 10k resistor. Resistor values are indicated in the bottom right table, to choose according to the desired configuration strap bits in the top table and to place according to the reference designators in the middle table.
        OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • julianmustofa
          Member
          • Dec 2021
          • 39
          • indonesia

          #5
          Re: [Help] Finding dGPU memory strap on lenovo g40 45 laptop

          Originally posted by piernov
          They are not 10k resistor. Resistor values are indicated in the bottom right table, to choose according to the desired configuration strap bits in the top table and to place according to the reference designators in the middle table.
          Sorry but in the top right corner was suggesting this 10k?

          Comment

          • piernov
            Super Moderator
            • Jan 2016
            • 4435
            • France

            #6
            Re: [Help] Finding dGPU memory strap on lenovo g40 45 laptop

            X = DESIGN DEPENDANT
            .
            OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

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