After 9,5 years our Dyson DC08 broke down. We ordered a new Dyson DC33C Allergy Musclehead, but I could not resist trying to fix the old DC08 for using it in the garage and other purposes that I would rather not use our new vacuum cleaner for.
A vacuum cleaner is fairly simple device from a technical point of view. It was unlikely that the electric cable or the on/off switch had failed. To be sure I checked both with an electrical (resistance) meter and they were fine. It had to be the motor.
If you search the internet for failing Dyson motors, you’ll soon discover that there are only two types of motor used in the Dyson DC02, DC05, DC08, DC11, DC19, DC20, DC21 and DC29 models. It can either be a YDK motor (90535802) like mine or a PANASONIC motor. They are easy to get by. For both, new ‘alternative’ and ‘original’ motors are sold for € 35 to € 75 including taxes. A steal compared to a new Dyson, that would set you back about € 300, but you can fix it for even less.
How to repair a Dyson motor by replacing the carbon brushes
Most electrical motors have a set of carbon brushes in them. Taking into account that we had been using our Dyson vacuum cleaner for almost ten years, twice a week for about 45 minutes, it was to be expected that the carbon brushes would be completely worn down. One way you can tell they are going, is by the somewhat strange smell it gives. The motor might just stop at some point, because the carbon brushes no longer touch their contacts. Another possibility is that it starts making strange noises. If it does that, immediately stop it before you might burn out the motor. If it burns out, the motor is beyond repair.
On eBay I ordered a set of carbon brushes for the Dyson YDK motor for just under € 10 including taxes and shipping. As soon as they are delivered, I will make an instruction video about how to repair a Dyson motor by replacing the carbon brushes.