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Restoring the Cosmos Valve Amplifier

A few months ago I spotted a very interesting and attractive looking valve amplifier on gumtree that I couldn’t resist. The amplifier was being sold for repair or parts as one of the valves was red-plating leaving one channel dead. This really didn’t phase me as troubleshooting valve gear is pretty straight forward, and red…

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Fixing an old electric synchronous clock

Some years ago I found what I thought was a very cool electric clock in an opp shop. It was 240 volt powered and had rotating numbers as opposed to the usual flip down numbers. Upon getting it home I realized that the mechanism had seized, after disassembling the little geared engine assembly and re-lubricating…