James L Orange , CA December 04, 2015 Appliance: Kenmore Microwave 40180094700 Kenmore Microwave 40180094700: A microwave/range hood combo had no oven light turntable stirrer and cooling fan operation. How to replace Assy Pcb Parts;Jmv820. Replaced the relay/control board Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes