Thanks for the reply; I checked the fuses and the voltage across them remains constant in all conditions. The white cylinder is a diaphragm switch, the two tubes run to the support ring at the bottom of the fan and to the inlet tube into the exhaust/ dust collection chamber. The switch is marked 31m...

Struggling to get the photos to come across and there is a limit of three.
I'll try later for more if you think they are needed.

Hello all; I’m new to this forum and am looking for some direction. We have a Bosch Athlet Vacuum Cleaner, a lightweight cordless devices. It meets our needs as my wife carries some weakness from surgery over the years. I replaced the handle, from a non-working unit on ebay. Done. Being a mean Scot,...