Hello I have a orignal mendel with gen3 reprap v1.2 . I have movement from Y and Z but not X, if I plug Y or Z into X it moves fine. The opto end sensors work for Z and Y ,but atm I'm not getting the X one to light up. I even swapped opto ends to see if was the problem but it is not. So question I have is what would make the X port from main board not move the X axis? Not having opto end sensor working?Bad main board? or did I forget something else? So close but yet so far
Ty in advance.