Mine stopped. I cleaned oiled and chaged bushings. it would run for a while and stop. I found if I started it by hand, it ran the other way instesad of pushing air. The motor polaroty somehow runs either way I push it to turn. Go figure?
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This fan has a blower motor which will eventually fail. The fan will still oscillate , but the blower motor will burn out. The motor thermal fuse will fail , lower bearing failure and armature burn out. No replacement motor less than fan price so, when it goes buy a better longer lasting fan.
It is possible that the main capacitor is faulty and so the coils is not enerrgised to start.
So check winding and check the capacitor for open.
Test capacitor by charging both the pins to mains voltage and shorting the pins to see if charge is retained.If retained the capacitor is good, if not replace.
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I had a similar fan which
quit.I could sometimes get it to start
spinning by banging on it.Finally took
it apart.Lots of small screws, all
small phillips.As I suspected, the
"thrust bearing," which supports the rotating components, had become
"stiff." I thought that it would be a non-friction (ball bearing),
but it is only a bushing, with washers supporting the shaft.With the motor opened up, I greased the
bearing with petroleum jelly, and reassembled everything.It is spinning very quietly now.Final comment - this is probably more work
than the average fix-it person would want to take on, but it is doable.It took about two hours, start to finish.I could do it in less than one hour now that
I know how to do it.
I have a Lasko HVB, but this might apply to your fan:
Without taking the thing totally apart, here's an idea you can try: The power cord on some models (like mine) has a "warning" tag. I had the damn thing all apart when I noticed this. (Well, who reads 'em??) Seems like there's a mini-fuse in the PLUG itself that, when it blows, there's nothing you can do about it except send it for repair to a factory authorized yadda yadda yadda. Who's going to do that??
If you plug in and NOTHING HAPPENS, here's what might turn out to be an cheap and easy fix: cut off a few inches of the plug end of the cord and go buy another plug at Ace. Heavy duty might be appropriate: don't think I'd want a lamp plug on this baby. Get one that's easy to install. Bring the cut off piece and they'll help you find exactly what you want.
If you want to open it up, there's a screw behind the Lasko medallion, remove that and you can snap out the grille. You can see where the cord comes in from the back of the blower housing. Test the line voltage. If you're not getting about 120VAC, it's the plug.
If that's not it, IMHO, without some knowledge or a schematic, you're screwed. That'd be me. It wasn't the plug.