On 4/29/2015 3:44 PM, Leon Fisk wrote:
How do they control the speed? i.e. can you check/get in between the
speed control and the actual motor?

Just wondering if something went bad in the speed control and it's
sinking the extra amperage. Do you have any kind of schematic to work
with that might show any of this?

There is a PC board for speed control. No schematic that I could find
on the net.

I had this thought too & I put a Fluke clamp-on true RMS meter between
the controller and the motor. It read the same as the ammeter on the input.

Bob