microwave DE LONGHI EM821AAN 4months old?

It's possible that the motor is faulty, or the shaft has broken off.
It could also be that it has come disconnected.

Other reasons could be, a disconnected switch, or a faulty relay which operates the motor.

Motors are simple and easy to change.

A faulty relay would mean a new relay pcb, in which case if it is a domestic unit, you'd be better off buying a new one(Much cheaper!!)

I'd go for checking the motor first!

Jon
May 2007