James K Solvang , CA December 12, 2017 So my microwave no longer heated anything and the turntable stopped turning but the controls worked I e timer etc I disassembled the front top of the case, removed the control panel, then removed the plastic bar with the three switches. After removing the three associated wiring harnesses I assessed the switches and found the top switch monitor interlock was defective. But, ordered the sw prim interlock also. Once I got the parts I replaced the top switch, plugged everything in and off we go all set. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes