In message , T i m
writes
Sadly there seems a bit more to this than new brushes and a blow
through.

Reassembled last night but motor not being energised. Yes I did put the
brushes in the correct way and am reasonably confident that the
connections were properly re-made.

I'm sure they were ... so I wonder if as the brushes failed it took
out something else?

All the controls/electronics are tucked away behind impenetrable
plastic. No doubt a service engineer would know how to proceed but I'll
dump it in a barn while I get on with the house.

--
Tim Lamb