So, I got REALLY bored today and decided to clean my fantastic fan. Yea. It was YUCK.
Any hoo, on the speed control are a pair of wire resistors to control the speed. Above that was a wire heat vent to keep them from letting smoke out.
Mine was clogged. May be worth a look.
So......I hope you did not let any of the "magic smoke" out.
No.
Still bored though.
Hey. Perhaps if I HAD some of said "magic smoke".......
50 years later in ca it's ok