I have a Porter-Cable 8" variable speed grinder that worked for a total of only hours, including balancing and so forth. The unit is out of warranty. Investigation showed a blown fuse which I was finally able to acquire through Amazon. New fuse blew immediately, no surprise there. As far as I can tell with a VOM (no capacitance setting) meter the start cap appears good.
Below are pictures of the device. The AC power cord runs into the control circuit board where the fuse is. A set of three wires runs from the control circuit board to the variable speed control and another similar cord runs to the motor. This is the only wire(s) going to the motor except for the capacitor.
Taking it to a repair shop will cost more than the unit is worth. Any educated or otherwise obtained ideas?
Wires enter and exit control circuit board:
Cable with three wires runs to VS control:
Cable with three wires runs into motor housing:
I'd be very happy if I could just get it to run without the variable speed. I would be very, very happy if I could get it to run at only a low speed.