The ceiling fan in the bathroom had three sockets, one of which stopped working, though sometimes you could wiggle the bulb and get it back on; then a second stopped. It seemed reasonable to replace the old sockets and it turned out to be cheap and easy to do. No, there isn't a brand name or model number on the fan anywhere.
But I saw a lot of youtube videos on ceiling fan current limiter failure and hoped there wasn't one in my fan. It appears there is. At least, there's a small component with wires, crammed in with about 20 other wires of various colors in the space of half a coffee cup, hard to see what goes where, and the lights still don't work.
So here's the symptom. I have an LED, a CFL, and an incandescent in the three sockets. They come on bright, then the CFL stops working, the LED goes into a weird strobe mode, and the incandescent burns at half power.
I've found lots of articles that say just cut it out (not so easy with the access I have) but none that explain how it works. Or why different lamps have different responses.