Michell Prisma

a space odyssey
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Posts: 2
Joined: 04 Oct 2004 04:39
Location: Hamilton, Canada

Michell Prisma

Post by Audiopro » 04 Oct 2004 15:15

Does anybody have any info on this turntable? Specifically operating manual or schematic for the speed control.

A customer brought me his for repair. At first it wouldn't spin at all. After replacing a cap in the power supply (a small ceramic) which appears to be in series with the supply rail and a 1k resistor, the unit spins. However it won't stop. As soon as the unit is plugged in it rotates. Speed control seems to work at 33 1/3 but I can't get a decent 45.

My problem is I don't know which speed control is which, and I had to guess at the value of the cap. There were no markings at all.


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