My collet switch is a membrane too. The protective cover has been worn off and the film has opened up to where the button contacts are exposed. It's not much of a crack , but enough to let dirt and coolant from your finger to mess it up. I sprayed electrical contact cleaner into the membrane as I operated the switch...kinda tapping it, not pushing, and it started working again. You'll need an electrical diagram or call Hardinge to find the in/out puts of the switch and wire accordingly. If your coolant button isn't working too, I would be curios to see that it may share the same bus or strip on the board.
Good luck and post back what you did... |