I hope I've chosen the right category for my case, but "Hardware" seems fitting.
I own a RB2011UIAS-2HND-IN since 2014 and it's the center-point of my home-network. Sadly, it died over night, and now shows no lights or functionality at all when connected to its powersupply. I already tested the powersupply with a multimeter and it delivers fine 24V DC. (The Router/Switch was installed at a wall, with its official bracket and was never moved since 2014. There where no Thunderstorms over the last days, and to my knowledge no power-malfunction in my house.)
After opening the case, I wasn't able to find much out of the ordinary via visual inspection. No ruptured or charred parts, Caps look ok. Only a little bit of white residue on the backside of the board, but no obvious corrosion on parts or the board, even in the area with the residue. I guess its either left over flux or condensation.
I tried to follow the conducting path and was able to get 24V for a short segment, but the traces soon became so confusing, without the schematics I can't test any further. (I repair 70s Hifi-equipment as a Hobby, SMD is a horror to me, but I'm willing to get over that.)
Are there known cases where this total malfunction happened and why it did? Maybe someone has an idea what I could try.
Or, maybe, I have to get a new Router/Switch?