Help identifying shorted diode.

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  • Donny2derby
    Badcaps Veteran
    • Apr 2023
    • 228
    • Uk
    #1

    Help identifying shorted diode.

    Hi there all.

    Troubleshooting an SMPS and I’ve found a SMD diode shorted in both directions. The trouble is it has no identification on it. So what do I replace it with and how do I tell where the anode and cathode is and how to mount the replacement?

    It is diode D1 on the image.

    Regards.

    Gareth.

    1 Photo
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 30965
      • Albion
      #2
      show the other side of the board and tell me the rating of the fuse,
      it looks like a bridge rectifier circuit but i need to know the power.

        Comment

        • Donny2derby
          Badcaps Veteran
          • Apr 2023
          • 228
          • Uk
          #3
          It’s a 2Amp fuse mate.

          1 Photo

            Comment

            • lotas
              Badcaps Legend
              • Jan 2016
              • 4524
              • Russia
              #4

              Remove the varnish from it with acetone, carefully scrape it off and the markings will be visible...​

                Comment

                • stj
                  Great Sage 齊天大聖
                  • Dec 2009
                  • 30965
                  • Albion
                  #5
                  2 or 3a rectifiers - 1000v rated

                    Comment

                    • Donny2derby
                      Badcaps Veteran
                      • Apr 2023
                      • 228
                      • Uk
                      #6
                      Ok lads thanks. Will get it off later.

                        Comment

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