Worked perfectly by pressing quick and prewashing buttons together while turning the knob to gentle spin.
Then all leds lit. Then I turned the knob back to Off again and the machine worked again. Wonderful ! The machine is 15 (!!) years and still spins att 1500 rpm.
(German quailty, proably impossible to get to day, only Miele which is very expensive). I suspect the brushes, and will change them as fast as possible, before the machine stops for ever
Mikael Lejdström, Sweden, August 2010