which was traced down to a dead electrolytic filter capacitor after days of crowd-sourced reverse-engineering and creating the first complete Centurion power supply schematic in probably many decades.

Their benefits are such that it’s become surprisingly rare to see a traditional linear power supply with a mains-frequency transformer and rectifier circuit, so [ElectroBoy]’s dual voltage PSU ...

If your notebook has dead batteries — perhaps no longer commercially available — or a failure on the charging circuit, this ...