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    i think fan0 mosfed died.

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    • weputundefined
      weput @A Former User
      last edited by

      @bearer said in i think fan0 mosfed died.:

      what

      100957988_336858113947556_4217073614500921344_n.jpg

      the mosfet died.

      A Former User? dc42undefined 2 Replies Last reply Reply Quote 0
      • A Former User?
        A Former User @weput
        last edited by

        @weput said in i think fan0 mosfed died.:

        the mosfet died.

        oh yes, there was little doubt about TR5's fate, but that is for Fan 0, TR1 is for Fan 2. (and TR9 for Fan 1). Anyways, dc42 is (as pr usal) probably on to something.

        weputundefined 1 Reply Last reply Reply Quote 0
        • weputundefined
          weput @A Former User
          last edited by

          @bearer fan1 works...

          fan2 doesnt. ;(

          by the way i'm already going to solder on a self tripping fuse when i can get one (stupid covid lockdown)

          what would be the recommended replacement part for TR5?

          A Former User? 1 Reply Last reply Reply Quote 0
          • A Former User?
            A Former User
            last edited by

            https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers#Section_Fan_mosfet

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            • dc42undefined
              dc42 administrators @weput
              last edited by

              @weput, that looks repairable to me. If you can desolder the last remaining bit of the old mosfet attache to the top left pad, then it looks like it should be possible to fit a new one. https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers#Section_Fan_mosfet

              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

              weputundefined 1 Reply Last reply Reply Quote 0
              • A Former User?
                A Former User @weput
                last edited by

                @weput said in i think fan0 mosfed died.:

                fan2 doesnt. ;(

                did the circled area clean up on TR1? if not it might need replacing as well. given fan 1 works, you might get away with new fets.
                bb3e4e16-3055-40b7-91d2-0d45ff972c59-image.png

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                • dc42undefined
                  dc42 administrators
                  last edited by dc42

                  PS - I just found that old thread, https://forum.duet3d.com/post/34904. Relevant if your Duet doesn't have any blade fuses.

                  EDIT: but if fan 1 works, that trace must be OK.

                  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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                  • weputundefined
                    weput @dc42
                    last edited by

                    @dc42 ok dumb question:

                    how do i know if my duet has blade fuses?

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                    • A Former User?
                      A Former User
                      last edited by

                      ce502585-16e1-4f51-94d6-f0c75af03b7b-image.png

                      if you can't see them, they're probably not there

                      weputundefined 1 Reply Last reply Reply Quote 0
                      • dc42undefined
                        dc42 administrators
                        last edited by

                        Check the PCB version marked on it. Version 1.03 was the first version with a fan fuse.

                        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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                        • weputundefined
                          weput @A Former User
                          last edited by

                          @bearer this one definitely don't have.

                          A Former User? 1 Reply Last reply Reply Quote 0
                          • A Former User?
                            A Former User @weput
                            last edited by

                            @weput the fuse is likely less important as long as Fan 1 works. But do take a closer look at TR1 after the clean up as indicated above.

                            weputundefined 1 Reply Last reply Reply Quote 0
                            • weputundefined
                              weput @A Former User
                              last edited by

                              @bearer said in i think fan0 mosfed died.:

                              it look fine.... but fan2 still doesn't move.

                              20200526_153543.jpg
                              20200526_153641.jpg

                              A Former User? 1 Reply Last reply Reply Quote 0
                              • A Former User?
                                A Former User @weput
                                last edited by

                                @weput said in i think fan0 mosfed died.:

                                it look fine

                                i'd beg to differ, looks like a tiny hole in it, and given the other symptoms odds are it has failed, just less spectacularly.

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                                • weputundefined
                                  weput
                                  last edited by weput

                                  well...

                                  maybe is time to think on a newer duet?

                                  fan1 had the heatsink fan on.. thermostatically controlled. Maybe that's why i didnt blew.

                                  fan2 had nothing on it.

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                                  • dc42undefined
                                    dc42 administrators
                                    last edited by dc42

                                    Please clarify: does just fan 1 work, or do no fans work (which is what you said in your original post)?

                                    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

                                    weputundefined 1 Reply Last reply Reply Quote 0
                                    • weputundefined
                                      weput @dc42
                                      last edited by

                                      @dc42 said in i think fan0 mosfed died.:

                                      does

                                      FAN1 works. (currently set as tool 0 fan.)
                                      FAN2 doesn't.
                                      FAN0 is blown.

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                                      • weputundefined
                                        weput
                                        last edited by

                                        i just realized i wrote mosfed instead of mosfet.

                                        (facepalm)

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                                        • dc42undefined
                                          dc42 administrators
                                          last edited by

                                          OK, so you have 2 failed mosfets.

                                          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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                                          • weputundefined
                                            weput
                                            last edited by

                                            FYI guys...

                                            i managed to make fan2 work.. but somehow fan0 aint doing it...

                                            also, when i was about to solder the self resetting fuse (vssa), after removing the soldered wire for the temporary pot... i checked continuity and it had continuity... so the old fuse was working.

                                            yeah... very strange.

                                            A Former User? 1 Reply Last reply Reply Quote 0
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