DavecUK Is this off off, or off.
MediumRoastSteam So I unplugged the machine and the noise is still there. I then moved the machine somewhere else, and, to my surprise, the noise is still there.
I tried both Dave. Off and Off Off. :-)
PS: Looking at some pictures, looks like the machine does have a DTDP (Dual Pole Dual Throw switch) or at least a DPST (Dual Pole Single Throw) switch.