Thanks for the answer, DannyBoy, it is great information.
First, I don't know what is the motor type of this machine though it was priced at the low end of the scale.
I'm hard pressed to imagine brushes are gone after 13 months of three times a week use.
And I'm equally hard pressed to imagine this cheap-ish machine has an induction motor.
So that leaves me with the tacho coil or the motor board, huh?
Bill Miller, November 2008