I am considering replacing the control with gecko's etc, but in the meantime, I really need to get my Y axis running again so I can make some parts!
The failure occurred during a 20 minute or so period of time when the machine was sitting idle.
Specifics:
I pulled the front belt cover off to expose the position indicator drive, and allow me to see any leadscrew motion... If I try to jog the Y axis, the leadscrew shows slight motion in one direction, then motion stops while I can hear the stepper motor whine increase in frequency... When single stepped, the axis moves a step in the same direction each time. Positive, or negative direction motion is the same. Two sequential steps feel pretty solid, the next two feel weaker when moving in the - direction. In the + direction, all of the steps feel a bit weak.
There are no blown fuses...
Is this a common failure, and if so, what components should I be looking at? I have a maintenance manual, so I should be able to locate parts/testpoints etc.
TIA for any tips anyone can provide!