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    Bed heater always on

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • Skaterundefined
      Skater
      last edited by

      I have looked over the board and can find no damage what so ever. Since I blew out a mosfet on a previos board I know what it looks like.

      Thanks

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      • elmoretundefined
        elmoret
        last edited by

        Hi Skater, was anything connected to this board aside from the bed heater prior to this fault?

        Generally this is caused by a short circuit in one of the things connected to the Duet causing a failure on the Duet itself.

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        • Skaterundefined
          Skater
          last edited by

          Motors, endstops, Hotend and a BLTouch

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          • Skaterundefined
            Skater
            last edited by Skater

            When I remove the jumper from the INT 5v EN the heater will turn off. Does that help at all in the diagnostics? I would like to get this issue taken care of

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            • A Former User?
              A Former User
              last edited by

              Its really hard to tell from the blurry photo, but looks like the E1 heater is also on?

              Could suggest the driver is damaged, but hard to say without a better picture tbh.

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              • Skaterundefined
                Skater
                last edited by Skater

                Thank You
                That is correct. The E1 heater is also lit

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                • A Former User?
                  A Former User
                  last edited by

                  So how about a focused high res picture if there is anything else relevant we might spot?

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                  • Skaterundefined
                    Skater
                    last edited by Skater

                    Here is the best I can get
                    IMG_4355.jpg

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                    • A Former User?
                      A Former User
                      last edited by

                      given both the bed and E1 are stuck on, they trun off when you remove the 5v en jumper and removing the sd card makes no difference i would suspect the problem lies here even though there no clear visual signs of damage.
                      c8c926ea-2c8d-44c2-8b16-3d80e54c2c65-image.png
                      not to say its not possible I'm wrong or there is more damage; however determining what is wrong only help determining the likelihood of what caused the problem, which will affect how to handle it but thats up to the duet3d people for now.

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                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        Hello, sorry to see you've had a failure.

                        Please contact your vendor and initiate a warranty replacement. You can refer them to this thread.

                        Z-Bot CoreXY Build | Thingiverse Profile

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                        • Skaterundefined
                          Skater
                          last edited by

                          Thank you for all your help

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