I'll ask owner for an electrician, but we have a weird issue with one of our luminaire in our apartment.
It's a two bulbs luminaire and since a year or so, we've change bulb in it like... 5 times maybe. It was LED bulbs because you know, 2018. So after asking some people, they told me that maybe our lights switch does not support LED bulb. So, we put normal bulbs in, guess what, two bulbs burn in two weeks. Bulbs literally burnt (it was all black in it every time) but it's always only one bulb and it seems to be always the same side.
So I bought few other bulbs, changed the luminaire for a new one too and installed it to finally put newly bought bulbs in... guess what happened again? I've change my third globes again in 2 months. And still same result; bulb get almost pitch black with a metallic reflect.
What can it be? Is there something else I can test on my own?
Because our appartment owner is not really on our side when comes time to take money out.
Here is an image a power board similar to ours (not mine) but pretty similar (took in Google). Consider that ours is much more messier than that tho.