Powermatic 3520B no longer starts

[Bernie May]

Went to start a turning yesterday and my 3520B would not start. Speed light is on, but the speed control no longer starts the lathe turning. Ideas?

[Reed Gray]

When I had my A, I ended up replacing the on/off switch and the speed control after some years, they wore out...

robo hippy

[Steve Mawson]

My remote switch quit working and it was a loose wire.

[Dwight Rutherford]

Often a blast of compressed air on the switch and potentiometer will do the trick.

[Joe Kaufman]

If it ts the Delta S inverter, check the switch and speed potentiometer inputs on the inverter display. Verify that the stop and run LED indicator lights change state with the red pushbutton switch operation, foreword and reverse work with the switch and the F value display increases and decreases with the speed control. The VFD manual is available in pdf form from Delta Electronics and other sources on line.

[Bernie May]

It was the potentiometer. Thanks guys.