Unfortunately, I threw the rest of the microwave oven away.
I looked again at the motor itself.
You are right, the circuit board has nothing to do with the fan motor.
There are only two gray wires going to it.
Gray wires are 300V 22 AWG
Motor has sticker with this info
Oh Sung Oem 10DWX1-B07 120 V .3 amps MAX Z.P. M1104151
Does it look like I could hook up a cord to the grey wires temporarily to see if the motor works ?
Thanks,
Andy