Fix the loud fan on a Chinese 12 VDC Power Supply @MattHeere
Fix the loud fan on a Chinese 12 VDC Power Supply  @MattHeere
Uploaded May 2019 | Updated September 2026, 2 weeks ago
*Sorry about the relatively low quality of this one - stupid GoPros are useless...but that's another video...

I have a couple of these imported 12 VDC power supplies. They mostly work pretty well, but a recent change to the design has the fan running non-stop. That's irritating, and as it turns out unnecessary.

To fix it I'm adding back into the circuit the bi-metal thermostatic switch that these supplies used to come with. It's a super easy mod and the parts are cheap:

Switches: amazon.com/gp/product/B07PGZL1LF
Paste: amazon.com/gp/product/B07L7WFSJ2
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Fix the loud fan on a Chinese 12 VDC Power Supply

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