I reckon hoovers are one of the most chucked away item that dont need to be.
I rescued one from a guy up the street who was chucking away a Henry...'You wont get it working mate, it went with a big bang'
I didnt intend to really, i wanted it ironically for the switch....and once i stripped it back, it was simply the switch that'd burned out completely. IRO £5 for a new switch, that hoover is now our spare.
Ive worked on many at work, Sebos are'nt infallible but are repairable.
Henrys, done a good few motors but the cord rewind contacts are most common, switches as well.
Dysons, the old ones were good, up to DC07 i think, then they started to get a bit....errrr....