It makes the same noise when connected to RA, so its the motor.
I maybe be able to buy just the motor, but awaiting confirmation on that.
I found the exact motor, but the shaft is not standard
http://en.nanotec.com/products/185-s...motor-nema-14/
I have ordered a small gear puller, should have it next week.
If I can get the motor at a good price Ill do that and repair the old motor and use it as a focuser (replacing my jacar elcheapo motor)