Michael A. Covington wrote:
Thanks to all who are responding! (And - Spehro, Sam, etc. - it's good to
hear from you again. I've been away from the electronics newsgroups for a
while.) I'll point my students to this thread.



If I may interject one more thought before you go?

None of the answers you have so far (assuming I
saw them all) speaks to the greater than normal
stall current.

IMHO bad magnets, or in fact no magnets at all would
influence this.

The 1.5 ohm resistance is interesting, though.
Is it possible that there's a diode in there
that no one's noticed? (arc suppression, reverse
polarity protection, or something)

If so, betcha a dime to a donut that it's shorted

Take care.

Ken