MSI A320M-A PRO broken component

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  • mc4ren
    Member
    • Jul 2019
    • 37
    • Basque Country
    #1

    MSI A320M-A PRO broken component

    I have a MSI A320M-A PRO board in which the Ethernet port is not working correctly. I have spotted these small components, with some of them being ripped off. I can read the number "40" on them but I can't identify them. A little help is appreciated. Thanks!
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    • mon2
      Badcaps Legend
      • Dec 2019
      • 14246
      • Canada
      #2
      Re: MSI A320M-A PRO broken component

      Can you post a zoomed pic of the motherboard ? I believe to have the schematic in my database subscription.

        Comment

        • mc4ren
          Member
          • Jul 2019
          • 37
          • Basque Country
          #3
          Re: MSI A320M-A PRO broken component

          Do you mean like a zoom out?
          Attached Files

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            • mon2
              Badcaps Legend
              • Dec 2019
              • 14246
              • Canada
              #4
              Re: MSI A320M-A PRO broken component

              Yes. Meant zoom out to review the surrounding components. On the posted pic - where are these damaged parts ?

              Looks like a SMD shottky 40V diode.

              Check with your meter in diode mode. Remove all power to the board.

              If it is a diode, the part will conduct in one direction and block in the other.

                Comment

                • mc4ren
                  Member
                  • Jul 2019
                  • 37
                  • Basque Country
                  #5
                  Re: MSI A320M-A PRO broken component

                  Thanks mon2,
                  I've uploaded an image marking the area of these components. I'll check the diode function of these components, I'm just away from home right now.
                  Is this in line with the schematics?
                  Attached Files

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                    • mc4ren
                      Member
                      • Jul 2019
                      • 37
                      • Basque Country
                      #6
                      Re: MSI A320M-A PRO broken component

                      Originally posted by mc4ren
                      Thanks mon2,
                      I've uploaded an image marking the area of these components. I'll check the diode function of these components, I'm just away from home right now.
                      Is this in line with the schematics?
                      Well, I finally measured the diode behavior of these components. Just one of these is working as a normal diode. They all have 0.256V in one direction, but the other direction varies from totally open to 0.8V and 1.2V.

                      Could these be the diodes marked in the attached figure?
                      Attached Files

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