Roy V Monroe Township , NJ April 18, 2016 Appliance: Model KENMORE ELITE MODEL 721.67909600 PART# 6912W3B002E Kenmore elite microwave light bulb burned out Took 2 screws on side & 6 on back including 2 security out pulled cover of unit extracted bulb from socket and think its an easy fix.Just need that security bit for 2 screws in the back of unit. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes