PWM fan0/fan1 output dead
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Hi. Do you repair boards? I think I've managed to fry the fan1/fan2 PWM output. It'll give 24v but the fan just whines and won't turn. I've tried other fans and they all do the same. I'm currently using the duex.fan3 and duex.fan4 outputs instead as a getaround. It's been a while since I printed or did anything with the printer so I'm a little rusty so many be even doing something wrong myself??
it's an E3D Toolchanger, currently no hot end on T3
; Fans
M950 F0 C"Fan0"; create fan 0 on pin fan0
M106 P0 H-1 C"Tool Fan" ; set Tool fan. Thermostatic control is off
;M950 F1 C"fan1"
;M950 F2 C"fan2"
M950 F1 C"duex.fan3"
M950 F2 C"duex.fan4"
M950 F3 C"duex.fan5"
M950 F4 C"duex.fan6"
M950 F5 C"duex.fan7"
M950 F6 C"duex.fan8"
M950 F7 C"fan1"
M950 F8 C"fan2"; Tools
M563 P0 S"T0" D0 H1 F2 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Reset tool 0 axis offsets
G10 P0 R0 S0 ; Reset initial tool 0 active and standby temperatures to 0CM563 P1 S"T1" D1 H2 F4 ; Define tool 1
G10 P1 X-0.8 Y0.1 Z0 ; Reset tool 1 axis offsets
G10 P1 R0 S0 ; Reset initial tool 1 active and standby temperatures to 0CM563 P2 S"T2" D2 H3 F6 ; Define tool 2
G10 P2 X-0.75 Y0.3 Z0 ; Reset tool 2 axis offsets
G10 P2 R0 S0 ; Reset initial tool 2 active and standby temperatures to 0C -
Forgot to mention it's a Duet 2 wifi. I actually have 2 boards with this same fault.
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It's possible the mosfets for those fan ports are damaged.
See here for an example along with the part numbers for replacement.
https://docs.duet3d.com/en/User_manual/Troubleshooting/Parts#fan-mosfet
We don't offer repairs directly, but you may be able to find a shop locally that can do the repair.
