Hello all.

Excuse me for my bad english.
I just have my BP 1 CNC and before i want to run in with a PC and Mach 3 control i want it to run nice and smoothly.
Now my Y-axis moves very nice. My X-axis only moves in little steps. When i hold the move button i can hear the motor running but the table won't move. I found a bad main transistor behind the heat sink for that axis so i guess i can solve that problem by replacing the bad transistor.
A different story is the Z-axis. It has the same problem. It can move in little steps. But when i hold the move button, it moves a little bit, then makes some noise and after that i can hear the motor running but it isn't moving anymore.
I also checked the four main transistors for that one but they all seems to be good. Next i've checked the controlboard which is fitted on the door with the black heat sink. I measured a lot on that one and it seems to be good. What can i check now? I really think it's a electrical problem.
Hope someone can help me.

Regards,

Bart