Quote Originally Posted by CommanderKenyon View Post
I've just got a 6040 and having problems with x axis managed to get things moving in Mach 3 rest of axis are fine but x moves in random directions and sometimes don't move just make humming noise with no motor movement atall
Guess, Wiring from control to motor fracturing, its amazingly brittle, or the TB driver giving up.

Swap X&Y axis plugs over and see which axis gets the problem?