I have been using the blackbox to control my cnc for over a year with no problems. No changes in the wiring or setup, but all of a sudden, one of the Y motors just stops mid-cut or even before I start the cut. One side starts moving, the other stays still and racks the machine. I have read a few posts on here that talk about either a wiring problem or a bad stepper driver. Unfortunately, none of the posts have any resolution posted after the first few comments, so it is hard to determine if they are accurate or not. I have not made any wiring changes, so I am doubtful that it is a wiring problem, which would lead me to a bad stepper. Does anyone have any other thoughts on other possible issues or resolutions? Thanks in advance.