Repairing a fan

Repairing a fan

Hey guys, I've got this fan that has started to rattle noisily when it's on. And when it's on for awhile, it smells kind of burny (since I noticed the smell, I haven't put the fan back on). The fan still works, despite the smell and the noise. Can anyone help me diagnose what's wrong and figure out how to fix it? I'm considering taking it apart, cleaning it, and lubricating the motor bearings, to see if that helps. Do you think there could also be a fuse problem? (And if there is, how could I tell?) i'm completely new and clueless to the world of DIY small appliance repair. Any advice, links, or suggestions appreciated.
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