# Power supply reverse engineering and repair

**URL:** https://community.openglow.org/t/power-supply-reverse-engineering-and-repair/1036
**Category:** Technical
**Created:** [August 11, 2025, 1:22am UTC](https://community.openglow.org/t/power-supply-reverse-engineering-and-repair/1036 "2025-08-11T01:22:11Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![buxtronix](https://community.openglow.org/letter_avatar_proxy/v4/letter/b/48db29/32.png) [@buxtronix](https://community.openglow.org/u/buxtronix)
#### Post date: [August 11, 2025, 1:22am UTC](https://community.openglow.org/t/power-supply-reverse-engineering-and-repair/1036/1 "2025-08-11T01:22:11Z")

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**Note the supply has high voltages in excess of 12,000v, so this is aimed at people who are already familiar and experienced with high voltage electronics**

In trying to get my power supply repaired (no high voltage output), I decided I needed to understand it a bit more and reverse engineer relevant bits of it.

I’ve documented my efforts in the hope that this can also help others with bad supplies.

It’s all in a Github repo at [GitHub - buxtronix/glowforge-psu: Documenting the Glowforge Pro power supply](https://github.com/buxtronix/glowforge-psu)

I have avoided duplicating things described on this Forum, instead linking where relevant. I’ve also added info on:

- Basic description of the supply
- High voltage driver reverse engineering (including a schematic!)
- Design for a breakout board for the ribbon cable

I’m hoping to add more info as it’s discovered (including diagnosing specific failure types) in the hope that suitably qualified people can help get many of the bad supplies out there up and running again. It’s such a shame that machines get junked due to what could be a $5 part.

As always, contributions are most welcome.