Roborock S55 (old) robot vacuum charging dock fix

Wed, 22 Jul 2026 00:01:00 +0300

Our old robot vacuum was in household room and somehow it got a bit wet and it went unnoticed. Water creeped up the dock via capillary action. PSU board got hevily damaged.

So my solution was to throw damaged PSU (230VAC > DC 20V 1.8A) out and replace it with USB Type-C power board I had laying around.

Hotglued the USB power board on the original PSU-board. Sometimes things just work out - holes lined up, original PSU was 20V that USB PD can deliver etc!

What's on the Bench

Mon, 20 Jul 2026 11:00:00 +0300

A first post, mostly to confirm that images render the way I expect.

DIY Electronics on laidna.ee

Roborock S55 (old) robot vacuum charging dock fix

What's on the Bench