Dyson Logo

Dyson Recent Questions, Troubleshooting Help & Support

  • 372 Products
  • 48K Answers

What are you trying to repair on the unit? Here is just one YouTube video related to the DC 39. You may want to use Google to narrow in on your specific issue.

Dyson Vacuums | Answered 50 minutes ago


Thanks for making contact and I'm sorry you're having difficulty.

I would suggest that this is a blockage of some kind as the pulsating is caused by a lack of airflow (the motor is protecting itself by pulsating and then ultimately cutting out).

I would recommend looking at the following video which will take you through a methodical way of checking this. The model in the video is a DC59 but applies to most cordless models:

Furthermore, I would check the bin inlet to make sure that the one-way door/flap is not jammed as this also can cause the problem.

If you continue to have difficulty, please give the Dyson Helpline a call on 1-866-693-9766 (US), 1-877-397-6622 (CA), 0800 298 0298 (UK). Our experts will be happy to talk you through some further diagnostic checks when you have your machine easily to hand.

Best wishes


Dyson DC59... | Answered 8 hours ago

easy fix, unplug the machine sit in front of it. put your thumb on the on/off button and push down and slip your thumb off of it as fast as you can so it pops real loud. Do this ten times and then plug back in and see if it works. ( this came from talking with Dyson people) Hope it works for you. They said this will reset the machine. also acts as a warning that your filters most likely need cleaned.

Dyson DC17... | Answered 2 days ago

Please contact Dyson customer service.

Dyson Vacuums | Answered on Oct 09, 2018

Battery issue.

Dyson Vacuums | Answered on Oct 08, 2018

Hi Yvonne, A flashing blue indicates that the battery is charging. No light indicates the battery is fully charged. A flashing red light indicates that there is a fault,

Dyson Vacuums | Answered on Oct 08, 2018

yeap..... i just found a fix for this ,, its mad how easy it is to fix as well...and it works 100%,,,
now dyson implemented a filter magnetic switch if u take your filter off you will see a small magnet in the corner,, u will notice where the magnet is behind it is rased platic,, now,,that the problem on the main board the transistor that picks up magentic signal from the filter is dud,!
dont ask me why it happens,, its a pain i know.,.
now take off collection pot for dust now take battery off.

now where the serial number is theres 2 hex screws that need taking out..

now u will see a small pcb board.. remove with one tiny security screw holding it in,, once removed pull both red plug off thats the digital motor plug.. and white plug which is vcc..to battery,, once u have done this pull the board down and back gently. as there is a long bit of board that goes up the back of the dyson plastic be very carefull pull this out.. now the long and thin pcb board that is hidden is what we need there is a tiny transistor,,, we need to remove this carefully..once removed,, we solder a thin wire from 2 point A+C need to be soldered together with a thin piece of wire, it will not harm the motor.. as long as u keep it clean,,

these points corolate to the transistor,,



SOLDER AND A+C WITH A FINE PIECE OF WIRE NOW,, AND WALLAH... fixed put it all back together again,,, charge the battery,, and your away,,, working again,, if not u have other faults.. but 99% fix this with flashing red led,,,!!

Dyson DC16 Root... | Answered on Oct 06, 2018

all battery vacs work on the same principle
so you have to clean out the hose behind the brush right up to the canister.
Hoover air stick has the same problem so they changed the head so that a removable section can be taken out the hose pulled up and a bottle brush can be used to clean out the hose to the canister and behind the brush
You will have to clean out behind the brush up to the canister to fix the problem

Dyson Vacuums | Answered on Oct 04, 2018

Does my dc14 have a brushbar control?..there is nothing I can see that I can do?..it won't hoover my new long pile rug?...please help

Dyson DC14... | Answered on Oct 03, 2018

Hello, it looks like you need to remove the containter to get the red clip. Push the clip back as you pull the hose up and out. I hope this helps!

Dyson Vacuums | Answered on Oct 02, 2018

It sounds like the filter is blocked

Dyson Vacuums | Answered on Oct 02, 2018

Not finding what you are looking for?

Ask a Question

Usually answered in minutes!

Top Dyson Experts

ray gallant

Level 3 Expert

53329 Answers


Level 3 Expert

83081 Answers

Tom Chichester

Level 3 Expert

47886 Answers

Are you a Dyson Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides