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Toolboard V1.2 faulty

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Duet Hardware and wiring
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  • undefined
    tecno
    last edited by 27 Mar 2022, 19:07

    Just got it and now the hotend heater is running wild even in OFF. Lucky me that I did see the temp rising close to 400°C and smoke from hotend.

    Disconnected heater temp goes down, connected in OFF the temp rises.

    undefined 1 Reply Last reply 27 Mar 2022, 19:48 Reply Quote 0
    • undefined
      tecno @tecno
      last edited by 27 Mar 2022, 19:48

      Anyways, I managed to make one 1.5hour test print for my new big Delta for size verification and it fits, so I was just about to start full scale print when I observed the high temp.

      DSC_0165.JPG

      The board

      DSC_0166.JPG

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      • undefined
        oliof
        last edited by oliof 28 Mar 2022, 11:31

        I can't help to note that there are some crimps only partially inserted which pose an immediate risk of shorting when the wires move:

        f897f493-3024-4b48-83ef-43d0009df71e-image.png
        0cc2b24a-364f-4f47-a4b5-4a9ba21c7a9d-image.png

        You also seem to be missing strain relief which can fray the crimped cables (applies to all wires, but here you can see how the bend cables get nicked just above the crimps which will likely cause them to break and fray sooner or later).

        b5afbf40-4699-4467-9067-fb023a7e31c3-image.png

        and the heater wire ferrules stick out a lot. Personally I would shorten them a bit so the ends carrying continuity aren't as exposed.
        6b08d848-b916-4285-9ed3-1293edd0a61b-image.png

        I strongly recommend addressing these issues as soon as possible.

        <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

        undefined 1 Reply Last reply 28 Mar 2022, 11:49 Reply Quote 1
        • undefined
          tecno @oliof
          last edited by 28 Mar 2022, 11:49

          @oliof
          Noted!
          These miniature crimps are a PITA to crimp without proper tooling as I wrote https://forum.duet3d.com/topic/27910/toolboard-feature-request

          These examples are NOT shorting during operation !
          #1 X axis home switch
          #2 hotend thermistor
          #3 yes they can be shorter and no shorting here

          undefined 1 Reply Last reply 28 Mar 2022, 11:50 Reply Quote 0
          • undefined
            oliof @tecno
            last edited by 28 Mar 2022, 11:50

            @tecno I didn't say that they are shorting currently, I just wanted to point out there is an acute risk of them shorting during continued operation in this way.

            <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

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            • undefined
              Phaedrux Moderator
              last edited by 29 Mar 2022, 06:10

              Can you remove the SD card from the Duet and power up the printer. Does the hotend immediately start to heat up when power is applied? If so, it would appear the mosfet has failed closed circuit.

              If so, please send an email to warranty@duet3d.com and CC your reseller. Include a link to this forum thread and the details of your original purchase. You'll receive a reply with a form to fill out.

              Sorry for the inconvenience.

              Z-Bot CoreXY Build | Thingiverse Profile

              undefined 1 Reply Last reply 29 Mar 2022, 07:25 Reply Quote 0
              • undefined
                tecno @Phaedrux
                last edited by 29 Mar 2022, 07:25

                @phaedrux said in Toolboard V1.2 faulty:

                Can you remove the SD card from the Duet and power up the printer. Does the hotend immediately start to heat up when power is applied? If so, it would appear the mosfet has failed closed circuit.

                If so, please send an email to warranty@duet3d.com and CC your reseller. Include a link to this forum thread and the details of your original purchase. You'll receive a reply with a form to fill out.

                Sorry for the inconvenience.

                Good morning,

                Yes it does heat up. You already got email on this issue.

                Cheers
                Bengt

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