Have one of these in the (quite large) bathroom:
The original (identical one) lasted around 5 years, and this one around
3 years. The first one stopped working one day - making a deep humming noise, and either not turning at all or turning at 1 turn a minute... The replacement one started to present the same symptoms this morning.I removed the cover, and there is a bit of dust inside which I vacuumed, but nothing else obvious. I can turn the fan by hand and the bearings seem fine.
Is there anything to look for, or is it time for a new one?
Also, assuming a new one is needed, any recommendations please? This one caught my eye: