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August 18, 2025

MSXALL

Everything about MSX, and more…

TinyPSU project is here to revive your MSX machines!

MSX power problems are no longer your headache! read more
TinyPSU project is here to revive your MSX machines!

We are excited to introduce the TinyPSU, a power supply project developed by RBSC to breathe new life into aging MSX computers – especially the Panasonic FS-A1 series. If you’ve struggled to find an original power supply or balked at paying up to $100 for one, TinyPSU offers a clever, affordable and what’s most important – an open-source solution.

  • Detailed installation guide is included, also available online
  • Powers all 3 MSX power rails: +5V, +12V, and -12V
  • Universal reliable external power supply from Amazon (goodbye voltage mismatch!)
  • Possible USB-C option to power your MSX in the future (work in progress)
  • Was tested with Barmaley cartridge with up to 3 Amper load

Explore the repository, build your own TinyPSU and bring your retro machine back to life!

Relevant link: https://github.com/RBSC/TinyPSU
Relevant link: https://www.msx.org/forum/msx-talk/hardware/tinypsu-project-…
Relevant link: https://sysadminmosaic.ru/en/msx/fs-a1_fs-a1mk2_psu_guide
Relevant link: https://www.youtube.com/watch?v=dCD-sZsrAgc

Source: https://www.msx.org/news/en/tinypsu-project-is-here-to-revive-your-msx-machines

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