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Topic: fan on stepper motor speeds up and slows down

I am running semplify 3d.
the fan on the stepper motor speeds up than almost stops.

I was printing with the right extruder the other day and It started doing it so I changed out the fan.
Today I tried to print with the left extruder and it is doing the same thing.could the other fan be going out also or
do I have a board problem.

Thanks
Dale

Ultimaker S3.

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Re: fan on stepper motor speeds up and slows down

dubbsd wrote:

I am running semplify 3d.
the fan on the stepper motor speeds up than almost stops.

I was printing with the right extruder the other day and It started doing it so I changed out the fan.
Today I tried to print with the left extruder and it is doing the same thing.could the other fan be going out also or
do I have a board problem.

Thanks
Dale


Without replacing the fans with a known good 24 volt fan you have no way of knowing if the issue is the fans or the driver for them.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

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Re: fan on stepper motor speeds up and slows down

I swapped back over to the right extruder and it is printing good so I guess both fans went at the same time.
will install new fan on left extruder.
Thanks
Dale

Ultimaker S3.