Can anyone confirm the correct feeder stepper motor for the UM2. I have a failed stepper motor, so i removed the original which had the following part number on it
SY42STH47-1684AW
I was unable to get this part number, but found the following part number from a company called Zapp
SY42STH47-1684A
I got one of these and replaced the old one.
The motor now works, but runs very fast, I would guess at twice the speed.
Does anybody know whats happened, have a replaced with an incorrect part? Why would the motor runs so fast.
Any advice appreciated.