Right , so todays news
I switch on and I open Mach 3 (mill)
Reset the onscreen button and try to jog to a start position. Y(negative ) does not respond but Y positive does .
I can jog Z+ and Z- and then Y - will work
I can then carry on and run a job from start to finish.

If when I switch on and find Y- not working I wonder if it is my keyboard so hit tab for the onscreen pendant and find it does not work on Y- either .
I cant understand this at all.
I am wondering about downloading a clean copy of Mach 3 and starting afresh but worried what will happen to my licence in the process.

I have downloaded and bought licence for UCCNC and copied into the directory , but it is still showing on my screen as demo mode . Maybe I should persevere with UCCNC as I do find Mach 3 often does things I am not expecting.

Any ideas ??