It's easy to fix these simple power supplies with a keen eye and a few spares!

Parts
Inrush limiting NTCs http://s.click.aliexpress.com/e/qNR7eMV
Replacement transistors http://s.click.aliexpress.com/e/rB2BAAE
10A power supplies http://s.click.aliexpress.com/e/EEu7yba
20A power supplies http://s.click.aliexpress.com/e/JmYvRFI

Tools used (some are better versions of the tools I use)
Proxxon mini vise http://geni.us/vise
Knipex needlenose pliers http://geni.us/KnipexPlier
Knipex wire strippers http://geni.us/KnipexStripper
Knipex flush cutters http://geni.us/KnipexFlush
Wire crimping set http://geni.us/CrimpSet
Soldering station http://geni.us/Soulderang

Product links are affiliate links I may earn a commission on qualifying purchases (at no extra cost to you)

All my video gear https://toms3d.org/mygearPlease do not attempt these repairs if you are not confident about your electronics skills. It is impossible to explain every detail in a video, so please proceed at your own risk.

Check out the Meltzone Podcast (with CNC Kitchen)!    / @themeltzone  

Enjoying the videos? Support my work on Patreon!   / toms3dp