Austin H Pleasant Hill , MO March 18, 2016 Appliance: Model LMV1683ST No heat or turntable rotation Disassembled microwave panels and ohmed out all door switches and found one with zero continuity. Replaced door switch, which was the very top one and assembled microwave. Tested microwave and everything works properly Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes