James W West Monroe , LA April 18, 2020 Appliance: General Electric Microwave JVM1730DP1BB Ge Microwave Jvm1730dp1bb: Light would come on inside and timer would count down but wouldn’t heat or turntable wouldn’t spin. How to replace Lower Lever Switch. I looked at troubleshooting guide on your website and came to the conclusion that the middle switch was bad. So I ordered the set of three switches and replaced them all, so I wouldn’t have to worry about one failing later. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes