James J Bristol , VA April 18, 2020 Appliance: General Electric Free Standing Microwave JE1590CH01 Ge Microwave Je1590ch01: Microwave/convection oven wasn’t heating properly. I have been noticing a sweet smell when cooking the turntable had quit working too. How to replace Microwave Diode Assembly. First off this appliance is 16 years old. The replacement machine is no longer made in the color we need, also the new ones rated very poorly. After taking the appliance apart I discovered the high voltage capacitor had been leaking, probably the odor I had been noticing. I had decided in advance to replace as many parts that made sense to restore it as close as possible to its original state. Replacing the turntable motor was very easy. The magnetron, capacitor and diode was a little more time consuming but not to tricky. Be sure to use needle nose pliers with good rubber handles to discharge any stored electricity in the capacitor. Do this before before disconnecting the magnetron. You will also need a security torx bit to remove the cover, regular torx bits won’t work. It took a little longer as this appliance is built into a wall cavity. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours