Re: Siemens MU 1600 Repair Suggestions
The hum you can hear probably is the motor. The type of motor used in these clocks can usually sit in a stalled state indefinitely. I would be looking for a mechanical fault: either something is fouling, or something is turning freely and not transferring drive to the next wheel.
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If I have seen further than others, it is because I was standing on a pile of failed experiments.
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