dryer knob does not move

[SIZE=3]The control knob on the dryer has ceased to move through the drying cycle. This happens in both the ‘Timed Dry’ cycle and the ‘Electric Sensor Dry’ cycle. As a result, the dryer does not automatically shut-off during these cycles. When the knob is manually turned to the ‘OFF’ position, the dryer shuts off.[/SIZE]