Larry W Cornell , IL August 25, 2015 Appliance: General Electric Free Standing Microwave JVM1870SK04 Ge Microwave Jvm1870sk04: Our microwave turntable coupler was broken. How to replace Turntable Coupler. I watched a video about how to remove the turntable motor which was all I needed to know how to replace the coupler. It was a very easy repair. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes