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    Shorted fan wire on the Smart Effector

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    Duet Hardware and wiring
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    • MediaXYZundefined
      MediaXYZ
      last edited by

      So I’ve has a bit of a catastrophic event.

      The one of the wires from the heat sink fan came lose where it connects to the Duet Smart Effector (v2) and shorted on the other one.

      There was a spark at the fan connector, but I can’t smell anything at the board or effector, but now none of the fans including the hot end fan, parts fan, and the cooling fans for the Duet 2 Wifi work. The probe isn’t registering either. I basically get nothing from the effector (the LED lighting though stopped working about a week after I installed the effector).

      The board still connects to wifi, and I can get the system to home upwards (to the end stops, which also seem to be working fine). Obviously if the effector is dead, I can deal with that, but the fact that the fan on the Duet 2 Wifi is also not working is concerning.

      So my question - any ideas what I have broken? This is my first printer I have built with a duet 2 wifi and smart effector, so I’m not super familiar with the hardware, but not totally unfamiliar with printer and other electronics (its not my speciality, but I can solder if I have to).

      jay_s_ukundefined dc42undefined 2 Replies Last reply Reply Quote 0
      • jay_s_ukundefined
        jay_s_uk @MediaXYZ
        last edited by

        @mediaxyz which version of the the duet 2 wifi do you have? newer ones have a fuse for the fans so I would be checking that first

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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

          @mediaxyz as @jay_s_uk check the fan fuse if there is one. If there isn't, on older Duet 2 boards an inner PCB trace typically fails when fan outputs are shorted, but it can be bypassed.

          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

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          • MediaXYZundefined
            MediaXYZ
            last edited by

            Thanks for the advice.

            Even though this Duet 2 Wifi card is pretty old (having come to me out of a different printer that was headed to the scrapheap), it seems to be new enough to have a fan fuse.

            Although it looked ok, putting my multimeter across the fuse blades showed it is kaput.

            I’ll swap it out and see how we go.

            Thanks again

            1 Reply Last reply Reply Quote 2
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