I got a new set of take-me-home lights recently: the USE Exposure Trace/TraceR set, an evolution of the brand’s previous small front/rear pairs. I’ve been riding with them for a couple of months now and love them.
My pair was working perfectly well until a few days ago, when I washed the bike while the rear light was still onboard. Already a bad idea, probably, but I’d forgotten to batten down the charging port cover and, predictably, the light succumbed to the hosepipe. Of course, once a waterproof thing has water in it, it’s rather difficult to get it out. In this case, the only way the water could come out was through the tiny micro-USB port machined into the side of the otherwise sealed body.
To my surprise, though, I eventually managed to get it working again by leaving it for a few hours in my friend’s food dehydrator (where rice, salt, and a hairdryer had all failed). So if you have water-damaged electronics, a dehydrator or dehumidifier might give them a new lease on life…