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    • peirof
      peirof last edited by peirof

      Hi,

      i have a Duet2 board, and until the moment, was working without problems... but this morning fans let turn, none.

      Always on fan, stopped. Heatbreak fan, stopped, layers fan stopped....

      I have check 2 things:

      • I have a PC PSU, 12v, and connect always on fan (12cms) and Heatbreak fan, they are 24v, and two fans turn....
        and
      • i have checked, with multimeter, voltage in always on fan, with Duet2 power on... and only can read aprox 2V...

      Some ideas?

      I have to say, that yesterday... fans works

      Thanks

      P.D.: Rest of Duet works, DWC, homing, moving.... only a strange behavoir, this morning when launch a print work...., Nozzle goes to start point.... and retracts filament, i have checked 2 or 3 times, changing slicer, and always the same.

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      • dc42
        dc42 administrators last edited by

        If it's just all the fans that don't work, and you have the fan voltage selector jumper in the VIN position:

        • If you have a 1.03 or 1.04 revision Duet, check the blade fuse. We supply a 1A fuse, but if you have a lot of fans or you have fans that take more current than usual, you can replace it with a 2A fuse. It's a "mini blade fuse".

        • If you have an earlier revision Duet, most likely you had a short in one of the fan circuits, and the PCB trace between VIN+ and the VIN pin of the fan voltage selector jumper block has fused. Check it with a multimeter.

        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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        • peirof
          peirof last edited by

          hi,

          think the fuse is dead... i have checked with continuit.... and there isnt continuity....

          Now.... search a blade fuse 2A in August...

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          • peirof
            peirof last edited by

            Hi,

            Can use a Míni Blade Fuse of 3A? For fans... Or must to be 1A or 2A.

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            • dc42
              dc42 administrators last edited by

              Yes you can use a 3A fuse, but obviously it won't protect the PCB traces form shorts in the fan wiring as well as a 1A or 2A fuse would. You should find 2A fuses readily available on eBay. The 1A fuses are a little less common.

              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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