"Martik" wrote in message
news:AFbKd.155023$KO5.91981@clgrps13...
I connected the motor to a 14v battery and it runs but when I connect it
directly to the power supply (red and blue wires) it just hums (quietly).
I
measured 100vdc from the red/blue leads on the power supply. Could the PS
not be generating enough amperage to magnetize the armature? How can I
test
this without an ammeter?

Here is a picture of the PS:
http://www3.telus.net/martik/motor1.jpg

Doesn't look like part of the scroll saw.
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N