A hand placing a TO3 shaped black PCB next to a TO3 packaged 7812 voltage regulator. The regulators sit in a U shaped black hear sink on the mainboard.

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   root42 (root42@chaos.social)'s status on Sunday, 26-May-2024 01:50:21 JST root42

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   After lubricating drive 1 and adjusting its speed using the potentiometer on the analog board, it is running reasonably well.
   Next up: replacing the voltage regulators with ultra low noise switching ones. The old ones are fine but the cases have a bit of corrosion and they produce much more heat than the new ones. The new regulators also have protection should something go haywire.