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I think I shorted my layer fan

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Smart effector for delta printers
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  • undefined
    timidtinkerer
    last edited by timidtinkerer 24 Feb 2019, 16:54

    something happened, smoke, the + hot end fan path melted the coating off then no lights either. where is the 1amp fuse/what is it labeled? and I don't know the revision but its says straineffector v1.3 cerl ohl 1.2

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    • undefined
      dc42 administrators
      last edited by dc42 24 Feb 2019, 17:07

      I assumed you were using a Duet WiFi or Duet Ethernet, so I meant the Duet revision. The 1.03 and 1.04 revision Duets have a 1A fan fuse.

      If the layer fan shorted on the Smart Effector, or you connected the fan with the wrong polarity, then the PCB traces between the 6-pin connector and the fan connector may have fused. If so then you can bypass them with wire links. There should be continuity between HF+ on the 6-pin connector and + on the Hotend Fan connector, and similarly between HF- and -.

      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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      • undefined
        timidtinkerer
        last edited by timidtinkerer 24 Feb 2019, 17:19

        oh yes i was using the maestro board, with the hotend fan and layer fan disconnected the lights arent working either. i fear i may have destroyed it somehow. but at least the probe still words.

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        • undefined
          dc42 administrators
          last edited by 24 Feb 2019, 17:25

          Do the stepper motors still work? Does the Always On fan output of the Maestro work?

          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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          • undefined
            timidtinkerer
            last edited by timidtinkerer 24 Feb 2019, 17:51

            so it would appear that everything on the meastro board is working while everything on the smart effector is working EXCEPT the lights and both fans (i routed around them to test them)

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            • undefined
              dc42 administrators
              last edited by 24 Feb 2019, 17:52

              Do fans work when you connect them direct to the Maestro?

              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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              • undefined
                timidtinkerer
                last edited by 24 Feb 2019, 17:54

                yes they do, i must have somehow melted something in the smart effector pcb that is shorting out the fans and lights. Are they routed together or very next to eachother?

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                • undefined
                  timidtinkerer
                  last edited by 24 Feb 2019, 20:25

                  Idk if this is already dead, but now they work, but as with before they dont work when placed underneath the smart effector and attached to the heat sink and layer cooling duct respectively. But before I attach them, same plug and everything just not mounted, they work fine, no loose wires either. Thoughts?

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                  • undefined
                    dc42 administrators
                    last edited by 24 Feb 2019, 20:28

                    Bad solder joint on the 6-pin connector? Or bad crimp joint where the cable plugs into it?

                    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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                    • undefined
                      timidtinkerer
                      last edited by 25 Feb 2019, 14:17

                      So I got the hot end hotend fan working fine, but I did a continuity test on the layer fan wires straight from the maestro and it said there was no continuity, is there something to replace on the maestro? or a work around? ps thank you so much for your help dc42

                      undefined 1 Reply Last reply 25 Feb 2019, 15:05 Reply Quote 0
                      • undefined
                        dc42 administrators @timidtinkerer
                        last edited by 25 Feb 2019, 15:05

                        Where exactly was there no continuity?

                        Does the layer fan work if you connect it to an always-on fan output?

                        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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                        • undefined
                          timidtinkerer
                          last edited by timidtinkerer 25 Feb 2019, 16:36

                          The lack of continuity appears to have been my misunderstanding of how the continuity test works, sorry for muddling things up.
                          The part fan does work when connected to the "always on". There appears to be a bubble on directly above the D18 lettering on a chip named F3 ED with to lines at the bottom of it. if that is the problem should i either A) try to remove and replace(which seems like a bad idea given my inexperience) or B) is there a way to change the pins from fan 0 to fan 1 in the firmware, or something to achive similar results?

                          undefined 1 Reply Last reply 25 Feb 2019, 16:47 Reply Quote 0
                          • undefined
                            dc42 administrators @timidtinkerer
                            last edited by dc42 25 Feb 2019, 16:47

                            If it's a 3-pin chip that looks damaged, then it's probably the fan mosfet. Removing it without damaging the PCB requires either hot air rework equipment, or low-melting point solder such as ChipQuik.

                            Here are a couple of firmware options:

                            1. In your M563 tool definition command(s), use the F parameter to specify a different fan. Then that fan will be used as the part cooling fan whenever that tool is selected. If you issue M106 commands without a P parameter when no tool is selected, the command will still be routed to fan 0.

                            2. If the second extruder heater output is free, you can reroute fan 0 to that. In your config.g file, use command M307 H2 A-1 C-1 D-1 to disable heater 2. Then use command M106 P0 A2 to redirect fan 0 to heater 2 output.

                            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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                            • undefined
                              timidtinkerer
                              last edited by 25 Feb 2019, 17:43

                              sorry for being a bother but this is weird when I tried adding F1 to the end of the line "M563 P0 D0 H1" and connected it to fan 1 I can increase and decrease the fan speed but it won't turn off.
                              Now when i added
                              M307 H2 A-1 C-1 D-1
                              M106 P0 A2
                              under "custom settings" and changed the fan to the heater 2 it would ONLY turn on and only for a second when I changed the fan speed.

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                              • undefined
                                dc42 administrators
                                last edited by 25 Feb 2019, 22:34

                                Fan 1 is configured to thermostatic mode by default, because it is normally used to control the hot end heatsink fan. So you need to disable thermostatic mode to use it as a normal fan.

                                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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                                • undefined
                                  timidtinkerer
                                  last edited by 26 Feb 2019, 00:27

                                  Worked like a charm thank you for all the help.

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