I repaired the X and Y drivers that the connectors and plugs had burned the contacts, at that time the Z looked fine (about 1 year ago), didnt look as good yesterday, I need to find a plug and connector more appropriate, this fix works but doesnt look very good................ The only damage was a broken drill, a scurfed part, and a divoted soft jaw.......... No divots or holes in the vise or table- thats a good thing!
Moral to the story, if there is a noise thats not normal, hit the red button immediately, dont wait to see what happens as it wont be pretty!l