Len Moskowitz wrote:

I have a Thorens TD-146 turntable whose motor doesn't turn. It's being
fed by a new 16 VAC/300 mA wall wart.

Anyone know what typically goes wrong with these? Anyone have
schematics?

From looking at the PCB, it seems to have a full wave rectifier circuit,
one transistor (with no identification), an LM324, an MC34001 and
miscellaneous passive parts (caps and resistors).

What kind of waveform drives the motor's four terminals?

http://www.theanalogdept.com/manuals.htm - may or may not be of use,
someone recently posted the link in some similar context, so I happened
to have it in my browser history for yesterday.

Len Moskowitz PDAudio, Binaural Mics, Cables, DPA, M-Audio


Kind regards

Peter Larsen

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