... and I forgot to answer "Where is the switch?". If you look carefully at the underside of the lid you will not that the is a difference in the plastic underside cover where the magnet sits. The micro switch is located under the main surround adjacent to the magnet. To get to it you
0) turn off the power
1) remove the dome covers from the two screws in the top of the machine under the lid at the front.
2) remove the screws.
3) lift up the whole surround, revealing the main internals of the machine.
The switch is clipped under the surround at the position described.
Colin (again), August 2007