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    So, I blew up a WK8 P9 at TR5

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    Duet Hardware and wiring
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    • Legrandundefined
      Legrand
      last edited by

      As the subject says, I have a Duet WiFi, V1.02, and a wire was ripped from the hot end assembly (fan wire, if I recall correctly) which shorted the board. The board boots up but it's not working correctly anymore. It appears as though a component labeled "WK8 P9" (transistor, I assume) with three leads on it located at TR5 blew up.

      Can someone tell me what this is so I can attempt to get a replacement and fix the board?

      Thanks.

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      • grizewaldundefined
        grizewald
        last edited by grizewald

        TR5 is a PMV40UN2 N-Channel MOSFET.

        Data sheet here: Nexperia PMV40UN2

        It controls the part cooling fan, so that matches with the short circuit.

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        • Legrandundefined
          Legrand
          last edited by

          Awesome. Thank you!

          1 Reply Last reply Reply Quote 1
          • worekarolisundefined
            worekarolis
            last edited by

            Anyone knows if PMV40UN2R is the same ting? Cant get PMV40UN2 anywhere 😞

            droftartsundefined dc42undefined 2 Replies Last reply Reply Quote 0
            • droftartsundefined
              droftarts administrators @worekarolis
              last edited by

              @worekarolis see https://docs.duet3d.com/en/User_manual/Troubleshooting/Parts#fan-mosfet for alternatives.

              Ian

              Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

              1 Reply Last reply Reply Quote 1
              • dc42undefined
                dc42 administrators @worekarolis
                last edited by

                @worekarolis is the board working apart from that fan output?

                Duet WiFi hardware designer and firmware engineer
                Please do not ask me for Duet support via PM or email, use the forum
                http://www.escher3d.com, https://miscsolutions.wordpress.com

                worekarolisundefined 1 Reply Last reply Reply Quote 0
                • worekarolisundefined
                  worekarolis @dc42
                  last edited by

                  @dc42 @dc42 Yes seemingly everything works except fan and smart effector lights.

                  Also I think I've found right MOSFET:
                  https://www.digikey.com/en/products/detail/onsemi/MMBFJ211/1049196

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                  • dc42undefined
                    dc42 administrators
                    last edited by

                    @worekarolis that mosfet is not suitable.

                    Duet WiFi hardware designer and firmware engineer
                    Please do not ask me for Duet support via PM or email, use the forum
                    http://www.escher3d.com, https://miscsolutions.wordpress.com

                    1 Reply Last reply Reply Quote 1
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