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Author Topic: Dyson DC40 faulty brushbar  (Read 3156 times)

Offline Paul J

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Dyson DC40 faulty brushbar
« on: December 18, 2018, 10:05:05 pm »
Hi all - could I get your opinions on this fault please.

My DC40 has just developed a faulty brushbar. If i power the cleaner the head motor runs for a split second and then cuts out. Turning the cleaner off and on with the power switch resets the trip fuse, the head then turns again and instantly stops.
I've metered the supply being fed to the contacts and I'm getting approx. 320V DC presented at the pins. If I rotate the mechanism there's no sign of cut out whatsoever (320v presented throughout the  full motion) and there's no sign of fray on the cable loom feeding it.

I'm pretty sure it's not the wiring loom so logically it's probably the motor. Before I order one is there anything else that could cause this issue?

any thoughts greatly appreciated.


Offline MVacs

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Re: Dyson DC40 faulty brushbar
« Reply #1 on: December 19, 2018, 12:39:11 pm »
If you are getting the 320v DC constant with no fluctuation when the machine is reclined up and down or waggled about, it'll be the brushroll motor.

Its usually more cost effective to change the assembly or the head itself. There are two versions, ERP and non ERP. >>Here<< is the non ERP short unit and >>here<< is the full ERP head.

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