ANT&TEC: Original 1985 Commodore 128 PSU Repair

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In this episode of ANT&TEC, Ant repairs a malfunctioning Commodore 128 computer power supply. This PSU features 9VAC and 5VDC outputs. The 9VAC output is provided directly from the transformer winding through a fuse, while the 5VDC output incorporates rectification and regulation circuitry. The video includes a schematic and explains the PSU’s basic operation, aiming to assist you in repairing your own unit.

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