I have acquired a German made clock - actual manufacturer unknown. It operates from 1 type AA battery. The time part works fine, but the dummy pendulum mechanism does not, and I wondered if anyone had ideas for repair? I realise the pendulum has no connection to the actual timekeeping and is purely decorative. The pendulum runs in a bearing at the bottom on the base plate in a cup which contains oil. It seems to move fairly freely. The motion is generated by two magnets which pass either side of a wound coil in the back of the top part of the case. But there does not seem to be any power being applied, so spinning the pendulum will achieve a couple of revolutions but then momentum is lost - it slows and stops. There appear to be 3 fine wires coming out of the coil which are soldered to pins at the sides. I am unsure how the pulse of energy is generated - there clearly should be some sort of switching which activates the coil each time the magnets pass, but there is no mechanical switch as such. Does anyone have any ideas? It is not worth spending much money on this, but if any easy solution is available that would be great.