Dyson engineer has just left and have to say I am really impressed with the company - have a DC04 which is a good few years old now (around seven at a guess), the brushes stopped turning although for a while suction hasn't been what it should be. I had tried cleaning out the various tubes, all parts of the Dyson are easily accessible and the instructions clearly show how to clean out the internal parts although unfortunately this didn't sort the problem. On the phone the Dyson person talked through as many troubleshooting steps as possible to see if the problem could be resolved however while the brushes started turning again suction wasn't as good as it should be. An engineer was organised for next day with a flat rate cost of 60 pounds to get the Dyson working whatever the fault.
The Dyson engineer arrived promptly this morning and quickly diagnosed three faults, one a switch, one a clogged up exhaust filter (didn't know of that one) and a worn tube. All three were replaced and the Dyson seems to be working as new, the charge was 40 pounds plus 9 pounds for an accessory that was asked for. The cost includes a year's warranty for any faults that occur.
These days so many devices seem to be designed to be difficult to service by end users and often very expensive to get fixed by the company itself making it often cheaper to bin the item and buy a new one. It makes a refreshing change to have equipment which is designed to last and backed up by the company itself.