This is regarding the circuit of my 3D printer mainboard.
I had an obersvation: It has a cooling fan (40X10 24V) which is having issues lately - it stops working sometimes, and when pushed to rotate, spins back.
Now one of the stepper motors (NEMA 17 ~3.5kgfcm) in my core XY has been malfunctioning, where it misses rotation sometimes out of the blue, which shifts the whole print. I thought this is due to the driver limiting the current to the motor, so I rotated the screw terminal clockwise a bit more to allow more current for the motor. This works fine for a while, but the problem comes back.
Now, I also noticed a few times that this issue occurred when the cooling fan for the drivers stopped working.
Can the stopping of the cooling fan cause the stepper motor to falter?