Many thanks for your reply Madrat. Just managed to carry out a very cursory examination. There is no sound from the motor at all, and no indication that power is getting through, which may (or may not...) be a hopeful sign. Before I start delving into unfamiliar territory (never done one of these before), are there any known problems with the power supply I should look out for? I hasten to add that the fuse in the plug is OK! I could never be that lucky......