Quote Originally Posted by JAZZCNC View Post
Have you tied setting a frequency by twiddling the little knob then using the VFD on/off button. It could simply be wired to the Start/stop inputs.? or Set it to On then try the Start button as it could be acting as a disable for when changing tools.?

So many possibilities and don't let Clive fool you.? His balls are solid Crystal and they work fine, he's just not a psychic ...
tried every button and not a peep out of it , I have tightened every connector but still no joy