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    Short circuit error on Kossel XL with duet wifi

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    Duet Hardware and wiring
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    • dc42undefined
      dc42 administrators
      last edited by

      You could put wires in the connector holes and measure between those.

      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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      • oogwayundefined
        oogway
        last edited by

        @dc42:

        You could put wires in the connector holes and measure between those.

        I put wires into the holes as far back as i could and measured but still get a reading of .0L. Perhaps i'm measuring it incorrectly? I used speaker wire and made sure to stick them in as far as they would go.

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        • oogwayundefined
          oogway
          last edited by

          I ended up stripping the wires just to be sure. Still same error message.

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          • T3P3Tonyundefined
            T3P3Tony administrators
            last edited by

            Sounds like you have a faulty thermistor or faulty wires between the board and the thermistor on your hotend.

            www.duet3d.com

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            • oogwayundefined
              oogway
              last edited by

              @T3P3Tony:

              Sounds like you have a faulty thermistor or faulty wires between the board and the thermistor on your hotend.

              Ok I'll look into replacing the thermistor. Is it possible I blew that little board that sits above the hotend? The one i plug everything into.

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              • T3P3Tonyundefined
                T3P3Tony administrators
                last edited by

                Ahh hold on. I did not realise you had a hotend PCB. That is another point where there could be an error. So measure the resistance of the the thermistor at the plug that plugs the thermistor into the hotend PCB. Also measure the reisitance of the connection from the hotend PCB back to the plug onto the Duet. The thermistor should be 100K ( the wires should be almost 0 Ohms.

                www.duet3d.com

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                • oogwayundefined
                  oogway
                  last edited by

                  So i measured the pictured black and green wires and got a resistance of .010 when the mm is set to 2M. Hope that's normal.

                  https://postimg.org/image/qfql2u489/

                  I measured the resistance of the thermistor plug (link to picture in a previous post) and got the same .0l reading.

                  Thanks for all of your help so far everyone. I'm a total noob. lol

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                  • oogwayundefined
                    oogway
                    last edited by

                    Does anyone know where i can find the hotend pcb? I tried looking on the E3D website and the Think3dprint3d website but did not see it.

                    Was also wondering this…since my hotend pcb still powers on my 2 fans connected to it...is it safe to assume that it's ok? I'm now thinking it's just the thermistor that needs to be replaced..

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                    • T3P3Tonyundefined
                      T3P3Tony administrators
                      last edited by

                      The Hotend PCB is on Github here:

                      https://github.com/T3P3/KosselHotendBoard

                      It certainly sounds like a new thermistor is the most likely.

                      www.duet3d.com

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                      • oogwayundefined
                        oogway
                        last edited by

                        @T3P3Tony:

                        The Hotend PCB is on Github here:

                        https://github.com/T3P3/KosselHotendBoard

                        It certainly sounds like a new thermistor is the most likely.

                        Awesome, I'll start there. Should i replace both wires coming out of my hotend? or just the thicker red one?

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                        • oogwayundefined
                          oogway
                          last edited by

                          Just to confirm, it was my thermistor. I replaced it and it heated up immediately. Thanks for the help everyone!

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