AEG oko lavamat 625 sensortronic stopped working?

After washing the last few weeks with a lot of clicking as if trying to establish contact electronically with various parts, my 21 year old AEG oko-lavamat 625 sensortronic did its last few clicks this morning.
It can still take in water and pump it out after I help it by turning the knob, but no more drum movement (washing, spinning).
I checked the brushes and belt, both are OK.
Is there a fault in the circuitry perhaps?
Can you help please?