Everyone knows that LED tail-lights are very bright and are not supposed to "burn out" like incandescent bulbs. In automotive tail-lights things seem to be going according to plan. However, on (boat) trailers, many people are having trouble with individual LEDs going "out". I've bought at least 3 pairs of LED lights and have had them fail in ~10 hours of use. The same thing turns up in online reviews of a different tail-light.
Apparently, it has nothing to do with submersion. I've disassembled two different lights. In one, the electronics are "potted". In another, they are sealed in a clear plastic container with wires "potted" at the entry point.
The housing on both of these lights fills with water on submersion and drains when brought out.
So, what's going on? Is "load dumping" in the tow vehicle causing transients? Are resistors burning out? LEDs being driven over rated current? Inductive "kicks" from the trailer wiring?
Finally, why can't these manufacturers hire a well-qualified electrical engineer to find out what the problem is - and fix it?
Seems the problem is not due to the LEDs! It is other circuitry. Does anyone have a schematic for these tail-lights? Migrate back to Electrical Engineering??