Has anyone had a Stepper Driver fail on them?
I think mine needs replacing.

Yesterday I turned on my 770 Series 3, and referenced X,Y, Z.
Y and Z referenced just fine.
X traveled all the way to the right, and got stuck on the limit switch.
The stepper motor kept trying to turn, and the mill was shuddering.

I had to E-stop and jog off of the switch.

Now the X axis motor sounds terrible, and REAL noisy.
Also when manually jogging in X, the motor will reverse by itself, not respond, or act intermittently goofy.

I'm thinking this is a sign of a blown x axis driver?

Any knowledge from you guys, that have had motor and/or driver fails is greatly appreciated.