Hi,  My CNC router has just stopped working properly. When I press the Y axis key on the keyboard of my PC, which runs Mach 3 software, the Y axis does not move, Instead of the Y Axis jogging, I just hear a buzzing sound. The X axis moves normally when jogged. When I swap the X & Y plugs that come out of the CNC controller box I get the same results except that I have to press different "Arrow" keys on the PC keyboard. It seems like it may be motor or cable connect problem. Any ideas?
Cheers   Gary

I've had that kind of problem before...

So you're saying you can get the y-axis to run if you switch the cables coming out of the control box?

That would mean the Y-axis motor is ok mechanically.

On my machine I had a gecko drive go bad.  When I replaced it, it ran fine.

Thanks for the help but on close inspection I found that on of the pins had popped out of a plug to the Y axis. When it was pushed home everything worked.
Cheers