Beogram 8002 motor issue

How can I fix this issue?

https://youtu.be/R9hbPttO4JU

Replace capacitors
Repair cracked solder joints
Replace CPU socket
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Repair front panel << / >> opto circuit.

Martin 

I can't see the black subplatter in the video.
Perhaps it's just out of view.
NEVER run the Beogram without it.

Martin

Do you mean the bottom plate of the whole unit? I connected the ground to it, but it is lying next to it.

Or do you mean the black plate that is under the vinyl plate?

The Beogram bottom plate is not important.

The black subplatter (the round rotating part of the eddy-current motor) sits under the platter (the round thing with the radial streaks on it, that carries the record).
Without the subplatter nothing will run and the tacho-opto gets no feedback. This causes the electronics
to send max output to the motor coils (to no avail besides heavy humming) until the drivers burn. 

Martin