I bought a second-hand Dyson dc04 from ebay from a chap who
reconditioned them. So I have no way of knowing whether it had been
used for 1 hour or 1001 hours before I bought it.
The underside of the base is a different colour to the rest of it
suggesting it is a "cut and shut" and potentially has parts from more
than one vacuum!
I had a phone call the other day to say that there was a burning smell
coming from the vacuum. I have read here that Dysons are well known
for overheating; especially if the filters get clogged.
When I got home I had a look. The filter was dirty but I didn't think
it was that bad. I tried it and there was a bit of a burning smell.
I found some instructions on the internet of how to disassemble the
vacuum. They were not a perfect match for my machine but good enough
that I managed to dismantle it.
The motor itself looks pretty clean, though there was carbon inside
the case. The problem is not knowing whether that's recent or whether
it has been there for a long time.
The motor runs but it is illuminated with blue at the brushes. Does
this mean that I need new brushes and can they be replaced or do I
have to change the whole motor? OTOH some drills spark in normal use
and they do not indicate a fault with the motor or its brushes. I'm
thinking that with it being an unknown age, the brushes could have
What else could cause the smell? I'm puzzled because I can't see
anything that is obviously burned. Before I buy a new motor, I'd like
to know what is wrong with the one I am throwing away. There is no
obvious burnt area and it does not make any unusual noise in use. Can
anyone satisfy my curiosity?