I had a socket in my room as a kid that would get warm even with loads in the range of 30W. I was too terrified to plug my PC into it although the outlet was ri

I had a socket in my room as a kid that would get warm even with loads in the range of 30W. I was too terrified to plug my PC into it although the outlet was right next to it. An electrician checked it once but didn't find anything, so at least the wiring and connections inside the socket must have been alright. Maybe somewhere inside the wall close to the socket a wire had a very thin section or something, and the heat spread to the socket eventually.