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I am going to discuss what we have typically found wrong with Dyson digital Airblade motors such as in the AB01 and AB03 when repairing these machines. Dyson have traditionally been quite secretive about Airblades; they offer no repair information, no exploded drawings, no part numbers and are even reluctant to supply simple consumable spare parts without a serial number and a pint of blood. The spares supply networks that exist for the trade to obtain vacuum cleaner spares are not served with Airblade spares.

Parts supply is currently limited to a handful of quite determined appliance dismantlers and grey importers. Indeed, Dyson have recently point blank refused to supply the after-market trade with simple things such as filters even.

So dont expect any assistance from them at all with Airblade repairs or spares. But fear not, all is not lost. We recently covered how to get inside a Dyson Airblade hand dryer. In this article, we are going to discuss what typically goes wrong with the motors. Having opened up your hand dryer, the motor is located inside a bucket assembly that looks like this. Getting inside that is a simple latter of a few screws. Once inside, we find two major components, the digital motor itself that looks like this.

And a printed circuit board PCB that looks like this. The PCB is marked with the part number: It is the same board on both AB01 and AB03 models. I recently had the opportunity to play about with half a dozen apparently non-working motor bucket assemblies, and together with cross testing each component with units I knew to work, I drew the same conclusion on all.

The weak point is not the motor itself, it is the PCB. On all the half a dozen I tested, the digital motor itself worked fine when coupled with a PCB known to work. This non-scientific test, albeit with a low number of units, tells us that in all likelihood, we need to focus upon this PCB as the likely source of motor bucket assemblies that do not work in the future. Looking at a digital motor in bits, there is really very little to go wrong with those.

Please note: This PCB in the motor bucket assembly is not to be confused with the other PCB that goes in the black box by the side of the motor bucket assembly. Observe the burn marks in the circle in the photograph below. The opposite side of another board is shown below, also with burn marks. Those four little aluminium components on the board seem to be the weak spot. On most I looked at, one usually an outer one had burn damage. You may very well think that is built-in obsolescence……..

So at this point, you have two options. I have just sent six of these off to a PCB repair specialist today, so in the near future I will be able to update you with information about if they are repairable by a competent person. Other repairs and troubleshooting will be the subject of future posts. Its a work in progress……. You can also use the comment box below to leave us your thoughts, ask questions or make comments, and please feel free to use the social media buttons to spread Dyson Medic to the far corners of the interwebs via Twitter, Facebook and other media.

We like that. You can follow any responses to this entry through the RSS 2. You can skip to the end and leave a response. Pinging is currently not allowed. They seem to be hitting their fault time as we now have four not working.

No instructions and trying to work out how best to get them working. Just read your article, the one I have on the bench has no damage as you show in the pics on the power supply PCB.

Could do with voltages expected etc to test outputs. Transferring parts from working unit is an option. For elimination. How best to set up sensors, for test unit would help. Then could plug in. Will crack on and see what we can work out.

This identifies if the problem lies in the motor bucket assembly — or not — quicker than testing outputs. That is now I tend to diagnose them for speed. Julien V on June 11th, at pm hello, Can you give me the reference or the part number of component D33, which is on the back of the card on the Dyson AB03 because mine is not readable?

Best regards.





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