Looking at the list of repairs today saw DC24 sparks from brush head now no brush rotation.
Unclipped the head checked voltage from socket it was present so started to dismantle head where the reset button usually is it was blanked off.
Never had one like this before Hrrm is the reset in with the switches like DC25 on this one i thought.
No it has no reset at all not only was the motor toast but so was the small converter pcb burnt to bits.
I replaced the motor with new and pcb with the old style with red reset button.
A small mod to allow the button to be depressed and all worked well.
If only Dyson hadnt removed the reset customer may have saved a lot of extra repair expense.