Commodore 64 External Power Supply, Part No. 902503-02
I present here some information about my Commodore 64 power supply. This is the repairable type, as opposed to the solid epoxy "brick" type from which, at best, you could salvage the transformer by carefully chipping away at the epoxy.
It uses a 3052P, which is a +5 VDC, 2A voltage regulator. NTE 1934 is an equivalent part.
When repairing, I used a 3W, 30 ohm resistor instead of the original half-Watt. The original diodes were 1N5400 (50 V), but I used 1N5408 which can withstand much higher voltages (1 kV) (see 1N540X datasheet to compare).
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P. David Buchan pdbuchan@yahoo.com
December 22, 2016