Quote Originally Posted by richie00boy View Post
Not sure what you mean there, the noise is the stalling. If the machine has been on about an hour it seems more prone to it. If I was to rewire it any ideas where I can get replacement connectors to fit the blue control box?

Is the nut the part in the housing that the leadscrew tuns to move the gentry up and down? I have tried moving the stepper motor by hand to feel for any tight spots and there didn't seem to be anything that bad.

The stalling can happen anywhere on the y axis, doesn't seem to be related to x or z axis position.
Maplins sell the connectors :)

I had to replace the x,y and z cables on our machine to keep the machine going, although i used standard connecting cable because it was all i had to hand at the time. Machine has worked ok since.

Swap the cable over and see if the fault tranfers to that axis which should confirm a cable problem.