January 25, 2026
Description
This is the set of 3D models of parts to install the TinyPSU power supply into the Panasonic A1F MSX2 computer. Sometimes, the original power supply can be missing or is too difficult to repair. Now it's possible to use the small power supply that was designed by RBSC instead of the original power supply. The TinyPSU needs the external 9V or 12V switching power supply (do not use transformer-based ones!), so no more troubles with 110V or 220V mains voltages.
To secure the TinyPSU inside Panasonic's case I am providing 3D models to assemble the power supply holder and the external power socket bracket. The kit includes several parts: keyboard lifter (to be installed under the keyboard on the right side to keep it horizontal, two L-shaped holders to secure the frame inside the case, the main frame that holds the circuit board and two small holders to secure the board in the frame. One of the holders has a hole to attach it to the frame with a 2mm screw. See assembly instructions below.
The full assembly and installation guide is available in this repository in the PDF format.
The TinyPSU project is open-source and can be found here:
https://github.com/RBSC/TinyPSU
If you want to make a small donation in appreciation of my humble efforts, please use the "Tip designer" button on this page:
https://www.thingiverse.com/Wierzbowsky/designs
License:
Creative Commons - Attribution - Non-Commercial