I can empathise with your frustration, especially where it is just one switch, but I don’t agree that an EC member should be responsible for fixing basics that arise, they aren’t on the EC to do that. The kind of person you are thinking of is a building manager, and they are paid and would also have appropriate insurance.
We had a leaking pipe a short time ago and I ended up in the courtyard at 9.30 at night in the rain with the plumber, I don’t get any thanks for that kind of thing. I will call someone out but that’s it, I would never try to fix anything.
If you aren’t on the EC perhaps you should nominate yourself and try and improve things. I don’t agree with EC members being off-limits.