Hi there, new to the forum but I've worked on a few Dysons before normally with success but struggling this time. Recently been refurbishing a DC40 (ERP) (purple brush bar with red slider). Main motor is fine, I diagnosed a dead brushbar motor, stripped it down, removed the old motor which smells burnt out, looking inside it looks damaged and has zero resistance across the terminals and I found a stiff bearing in the brushbar which may explain it burning out. So ordered a replacement OEM Johnson DC771(2)XLLG. Fitted it and nothing happened. Tested the output and its reads 330v DC at both the socket and at the end of pink and white wires, which from reading this forum sounds correct? So it doesn't' seem to be the loom issue. So I was convinced the new motor was DoA so got hold of another one. Exactly the same. Two brand new motors don't do anything despite having supply. I'm stuck for ideas. Any suggestions?
The only other thing i noticed is that the brush-bar override switch next to the main power button doesn't appear to do anything. The DC supply to the socket continues when you depress this. It may be faulty but if the motor is getting supply it appears to be stuck on rather than stuck off.
Slightly confused that the motors are all marked 240v DC and the output is over 300 but it sounds like this is how it's meant to be.