Capacitors are dangerous! - Mi Air Purifier Repair

A leaky capacitor caused my brother's Mi Air Purifier to fail with a bang so, we now explore the fail and will use a new module to fix it.
Mar 12, 2022 — 1 min read — Electronics

Capacitors are dangerous! - Mi Air Purifier Repair

Capacitors in power modules can hold quite a lot of charge even when disconnected from the mains.

This is exactly what I demonstrated in the repair video below, where I replace the power module of a Mi Air Purifier Pro that belongs to my brother.

The original power module of the air purifier failed with a bang because of the leaky capacitor, just after the warranty period was over so I decided that I will repair it myself.


Full written instructions for the repair can be found in the Instructable article.

Tools and materials used in the video:


diy soldering psu repair
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