I am in quite a bind with a large project for a customer. My x axis motor is suddenly making a very loud noise and is sometimes going the wrong way when trying to move the head around the laser. I will press the left button on the control and it will go right or vise versa. I have filmed a video of this. Can anyone diagonse the problem and tell me where to start. is it the controller or the motor? Here is the video:
https://youtu.be/urKL70K561k

I took the belt off and this is what happens:
https://youtu.be/FrmfL_TZZTs

Thanks in advance!