I made a simple replacement power supply for my Commodore 64 and my VIC 20 by using a 9V transformer and a pre-made 5V power brick and putting it into a nice case basically.

I kept the "preliminary fuse" of 315mA for the primary but settled on a larger 1.5A fuse for the 5V because 1A is underpowered (and causes problems, especially on the VIC20 which is a bit more power hungry).

ONLY ATTEMPT TO BUILD SOMETHING LIKE THIS IF YOU KNOW EXACTLY WHAT YOU ARE DOING. MAINS VOLTAGE CAN KILL YOU!

Ray Carlsen's C64 power supplies: http://personalpages.tds.net/~rcarlsen/

Greisi's PSU is in this video (everything's available for download from the video description, also the pinout of the C64 power connector):    • GWB#1 - Commodore 64 / 1541-II PSU  

Here's the DIN 45329 plug you need: https://www.c64-wiki.com/wiki/Power_S...

Here's the case I used: https://www.reichelt.de/Kunststoffgeh...

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