We've just had a Thorens 124 turntable donated to our school (from the
estate of a donor who also donated probably 4000 records, so this is a
welcome addition).

I've never seen one before but know it's a potentially great turntable
(don't want to sell it!). It appears that the big selector knob is the
ON/OFF -- it's either set to 0 or to a speed. Problem is nothing happens
when it is turned on. The "brake" on the side is off, but the thing doesn't
turn and the strobe light doesn't come on.

Any suggestions? (and yes it is plugged into a good outlet....)