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Turntable motor voltage issue?

My 20yo (1999) Sony PS-LX250H motor is not turning on its own, but I can easily turn it by hand. On the motor's side, the label says it is a 9.12Vdc motor. When I measure the input on it, it gets only 8.3Vdc. Am I doing this right? (I'm a total noob when it comes to electrical stuff.) Would the voltage drop be the cause of why the motor is not turning? Please see attached images. Any ideas on what could be causing the problem? Thank you.Motor

Voltage

thadson
2 responses Add your response
thadson OP
1 posts
 

I have looked and didn't see any place to unplug the motor wires.preamp top

preamp bottom

Also since I had to look closer, I noticed that there are burning signs on the motor circuit board where the square black component (which could be an SRC, if my Googling is right) is attached.

Burns?

holmz's avatar
holmz
2,328 posts
 

You could see if there is a way to unclog the wires and check continuity (ohms) across the motor.

That gets easier if there is plug somewhere on the other end of the wire, so you do not need to desolder the motor.

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