many thanks to you gents of the northern hemisphere.
I have the DC25 laying flat on workshop bench. I have tested the pins in the head with the multimeter. All good.
The multimeter pins are to large to fit in the slender slots at the main unit end...so I have not test these. Nevertheless, at least 1 second of electricity must be sent to the motor head.
I also tested the little black toggle switch on the side of the ball. It is fine and keeps the current at full (on the multimeter) for the 2 minutes I tested it.
Do the DC25 have a overloader trigger???
Seeking your help please and still
Gents, have a safe Easter