I have a ceiling fan that hums badly. Is not dimmed is running at full
speed or one notch down with the pull chain. Is not a 120Hz buzz but a slow
hum modulated by the blade position. In other words the hum changes
cyclically around the blade circle. It is not mechanical because it stop
immediately after cutting power.
Any idea on what to look for when I get it down?
I had a fan do this and it turned out to be a loose light fixture attached
to the fan that was vibrating. If your fan has a light fixture attached, I'd
check that before taking the fan down. On mine, each bulb has a cover
attached by three small screws. I just tightened the screws and the hum went
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