Chosen Solution
I have A Kenmore Elite Model #85713. Everything appears fine except that when you try to heat; the lights go on inside , but the tray is not moving and I am not sure if the magneto is still working
Cause 1 Turntable Motor Use a multimeter to test the motor for continuity. If the turntable motor does not have continuity, replace it. Cause 2 Glass Tray Drive Coupling If the microwave turntable is not turning the glass tray drive coupling could be broken or stripped out. Gently pull the coupling off the drive motor shaft to inspect the drive coupling for damage. Cause 3 Glass Tray Support If the microwave turntable is not turning the glass tray support could be broken or stripped out. Gently pull the support off the drive motor shaft to inspect the tray support for damage.