Basically my problem is probably simple, but I could not find anything searching google and here - maybe I was looking for the wrong things, but here is the problem:
I work in a Hostel and we bought five 3W LEDs with each having their own PSU. (see Photo 1) After installing them just three weeks ago, one of the LEDs stopped working and we didn't think much of it and my boss replaced it incl. the PSU (because they come hooked up to each other and he didn't know that they are easily disconnected). Then the next another one stopped working today, not even 4 days later so I decided to take a closer look at it. Took it all out, connected a new LED to the old PSU and it didn't work. Must be the PSU, opened that up and it was all burnt and black on the inside, quite obviously at the capacitor. So now I am wondering what can cause this? Kinda important to know as there are 5 of those in a wooden wall in a wooden building and the last thing I would like to do is burn in this place :)
The input of the PSU is (supposedly) rated at 100V - 265V (Photo 2)
Thanks in advance!