Hi,
I'm trying to fix a direct drive tuntable unit, 45 and 33 rpm.
Its a Sony unit, PS-T33. Any help or advice would be welcome.
The speed control unit runs at 13 to 14 volts,
the motor appears to have windings in a square arrangement.
It has a speed sensor round the inner edge of the turntable,
which i guess is compared to the mains frequency,
but i dont really know.
The turntable doesnt rotate on its own, even if you help it manually.
I have downloaded the manual, which includes a schematic
but no explanation of how it operates.
Any help appreciated, John
I'm trying to fix a direct drive tuntable unit, 45 and 33 rpm.
Its a Sony unit, PS-T33. Any help or advice would be welcome.
The speed control unit runs at 13 to 14 volts,
the motor appears to have windings in a square arrangement.
It has a speed sensor round the inner edge of the turntable,
which i guess is compared to the mains frequency,
but i dont really know.
The turntable doesnt rotate on its own, even if you help it manually.
I have downloaded the manual, which includes a schematic
but no explanation of how it operates.
Any help appreciated, John
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