Electric Fan Repair

>>1029762
>I've considered buying new capacitor

Its easy to test if its the cap. Turn it on and listen for a noise. If theres noise its probably the cap. Another way to test, thats less safe, is to turn it on and spin it yourself a few times as fast as you can. If it starts turning on its own it was a bad cap. If it doesn't its probably something else.

The main problem is a bad cap often leads to other issues. The cap fails and the motor is left energized but not spinning. So it heats up. Without any airflow to cool it you fry something.

>>1029763
Yeah, but unfortunately the motor doesn't make any sound. So I suppose it is the engine fried. Thanks anyway

>>1029762

Odds are very good it's the capacitor or the switch. The style of motor used in the typical fan pretty much never dies.

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>>1029768
>>1029763
So I've bought a new capacitor but it's not marked very well, and I don't know what's the capacitance and voltage. Can somebody help me read it? Thanks

>>1029813
how can you buy a new cap if you don't know the parameters?

>>1029813
Just bought it from a vendor in Hong Kong. And I don't know technical terms in Cantonese. I just asked for the needed parameters and he handed me this saying its fine. It was cheap so I didn't ask questions.

>>1029813
155 = 1.5µF
K = 10%
275~ = 275V AC
X2 = safety capacitor class
40/100/56/B = -40 to +100C, passes 56 day humidity test

>>1029836
Thanks a lot. And as far as I know this cap isn't polarized, is it? Plus and minus isn't marked.

>>1029762
>and after oiling the rotor

u wot

>It has an induction motor

There is many different types of motors that are induction type, can you please post pics of the motor?

>>1029813
that type of capacitor is typically used in emc filtering/snubber use. See x class capacitors. That capacitor was likely used across the supply to meet emc regulations, not to allow the motor to operate.

The motor being a fan motor is most likely a shaded pole motor, the only thing that stops them from working is either seized bearings which is easily identified or burnt out windings which can be identified by smell and a ohm meter. There is a chance that the motor has an integrated thermal fuse that has operated and protected the winding however you'd need skill and patience to replace/bypass that.

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>>1031249