The World's #1 Vacuum Cleaner Advice, Repair, Discussion & Information Forum

Author Topic: DC40 Brushroll Puzzle  (Read 205 times)

Online macman

  • Member
  • Posts: 275
  • Country: gb
  • Gender: Male
DC40 Brushroll Puzzle
« on: January 02, 2022, 02:50:35 PM »
Another year, another DC40 ERP with a non-working brushroll... I fixed this same machine back in March and replaced the whole cleaner head: hair build-up had melted the brushroll spindles.
So when it came back in, I assumed probable yoke loom failure. The brushroll spins on start up but stops again in less than a second. Tested the yoke loom for continuity, fine. Measured voltage at the cleaner head socket, fine at 320V DC. Stripped the cleaner head, motor looks OK, it turns freely, and no visible damage to the comm.
 I'd assume brushroll motor failure, but its only 9 months old,  so any suggestions please? Possibly the PCB is failing only when under load, though no signs of burning on it. Would the momentary start up indicate this?
Unfortunately I don't have a spare brushroll motor I can swap in to test, or another DC40 to swap the head with.

Online macman

  • Member
  • Posts: 275
  • Country: gb
  • Gender: Male
Re: DC40 Brushroll Puzzle
« Reply #1 on: January 05, 2022, 11:23:22 AM »
Update: the brushroll motor was burning out. I found an old DC25 head I'd forgotten I still had, swapped the motor over and it worked fine.
I know these motors are fragile, but that's the first I've seen fail in less than a year.

Online MVacs

  • Administrator
  • Member
  • *****
  • Posts: 6033
  • Country: gb
  • Gender: Male
    • Manchester Vacs -- The Independent Dyson Specialists
Re: DC40 Brushroll Puzzle
« Reply #2 on: January 10, 2022, 08:54:59 PM »
A dodgy PCB can cause them to fail prematurely.

Dyson Spare Parts


 

 

Trade Dyson Spare Parts

 

 

Dyson Spare Parts

 

 

Freestanding Dyson Cordless Vacuum Stand

 

 

Buy a Dyson DC04 Wand Handle

 

 

 

 

Buy a police truncheon

 

 

Instagram

Dyson Spares, Parts, Advice   Follow us on Twitter

Manchester Vacs on Instagram