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    • GBusy24
      GBusy24 last edited by

      My part cooling fan has stopped working. There seems to be a failure associated with the PWM Fan0 port that I have that fan connected to. It shows 24.1 volts w/ no load, but w/ the fan attached, voltage drops to 2.6. I attached another fan that I know to be good to it and have the same result. Advise please.

      No such thing as spare time. No such thing as free time No such thing as down time. All you got is lifetime. Go!

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      • dc42
        dc42 administrators last edited by

        Sounds like a bad connection or a failed MOSFET - although that's a strange failure mode for a MOSFET.

        When you set the fan to fully on with a fan connected, is it the positive terminal that isn't at +24V, or the negative terminal that isn't at 0V?

        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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        • GBusy24
          GBusy24 last edited by

          Negative terminal is showing 21.3.

          No such thing as spare time. No such thing as free time No such thing as down time. All you got is lifetime. Go!

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          • dc42
            dc42 administrators last edited by

            In that case, my guess is that the Fan0 mosfet has failed.

            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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            • GBusy24
              GBusy24 last edited by

              Any type of warranty with these boards?

              No such thing as spare time. No such thing as free time No such thing as down time. All you got is lifetime. Go!

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              • dc42
                dc42 administrators last edited by

                Yes, speak to your supplier.

                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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