Yes you are probably correct, I did not notice the brown was 5V, & given that ,then the tacho or what ever controls the speed probably cannot be tested with a multi-meter & may be faulty preventing the motor from working Again all guesswork.
The world loves a trier.
You seem to be under the impression that repair of an overly complex piece of machinery is a simple task.
You say "but the innings of this fan dont seem that complex or am i missing something like i say there is just a 220v motor and a board"
Since the LEDs aren't illuminated and the motor doesn't run, don't you think that just maybe the 'simple' circuit board might be the problem.
Well i am gonna have this fixed as i have bought each removable part from dyson im just trying to find out before they come and i go down the route of trial and error which part could be at fault...
permanent magnet rotor with polyphase stator windings by the sounds of it so you might well expect some jogging as the rotor passes poles
My monopoly money is on the control board
Yea checked that with a meter there was a slight hum from the board when plugged in dyson says there motor is out of stock so i have to wait till there have it back in stock....
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