Hi,
The blown component is most probably a varistor (given that its’ circuit designation on the board is VR1)
It is essentially a surge protector designed to protect the circuit in the event of a power surge, by sacrificing itself, which in essence is what happened when you plugged the device into a higher voltage outlet.
You may be able to determine what its’ value is (was?) by trying to “join” (not literally) the blue cover together to see if you can make out the information that was printed on it, which will give its value.
Do not handle it too much as sometimes the printed information will rub off on your fingers.
Hopefully it blew before any further damage was done to the circuit.
Once you have the replacement part, it should be an easy matter to unsolder the old and solder in the new component.
After that you can test it to see if it works or not.
It is doesn’t then further diagnostic tests of the circuit will be needed. What is the make and model number of the air purifier?
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Hi nospam well, you can give a try,
from the pictures you had provided, it should be a MOV (Metal Oxide Varistor) at 271K
some interesting read:
http://zhuyong.me/blog/2015/11/09/repair...
Augustine tarafından