Blender suddenly stopped working: when it suddenly stops, it’s usually the overload protection that kicked in. This thermal switch-off function protects the motor from overheating. You can leave the machine to cool down for a few minutes, and then press the reset button underneath the base. The blender should then be working again. Overheating is usually the result of blending heavier loads on low speed. Rather blend on high speed so that the motor is used at full capacity.