I had bought a this Car cooling fan and it worked fine but later one of the fans stopped working. I took it apart and checked everything I could. and it all seamed to work fine.
https://www.aliexpress.com/item/4001118023418.html?spm=a2g0s.9042311.0.0.6f6f4c4ddcUwDpbut the fan would still not work even though the other fan works fine plugged in to this fans wire. So I thought the component in the picture might be the problem. I googled the part number but found nothing. It has 4 prongs and looks like a transistor. it has the following written on it: "0CS 29830 0QAG"
It is likely OCH29830. It is a hall sensor with some integrated motor driver.
Thanks I could never have guessed it.
when I turn it on the motor drives for a couple of revolutions and then stops working.
I have a multimeter, Can I test it with that?
plus how can I order one to repair it.
Thanks again
This is the circuit behind the coil,