JES735WJ03 General Electric Microwave - Overview

First I disconnected the power and opened the door. Then I removed the top screws holding the top vent louvers, then removed the screw at the top of the touch pad. The touch pad removes by sliding up slightly then tilting top out. I unscrewed two screws holding the door latch assembly. Press the tab to remove and replace switch. Reconnect wires, reseat latch mount by placing top bracket tab in place first, allign and secure with screws. Reseat touch pad by placing bottom tabs in first, tilt forward and press up to seat top tabs, secure with top screw. Secure vent louver screws, plug in and watch your microwave work again.

Remove microwave outer cover. Turn on side & locate the upper & lower door switches. Better to replace in pairs even if one is ok. Remove the wire harness to each switch. Then replace switch and re connect the wire harness. Re attach outer cover
and test to see if that solved the problem. If so then well done!!

I followed the generic trouble shooting directions on the web site. It suggested either diode, capacitor and/or magnetron. I test each. All tested OK except diode. It was supposed to measure open in one direction and appox 200k ohms in the other direction. My diode measured open in both directions (tried multiple times, multiple settings). I replaced the diode. The order process was great and it shipped immediately. I knew I was in trouble when I measured the new diode and it too was open in both directions. It was easy to install but unfortunately no joy - did not solve the problem. At this point it is likely cheaper just to buy a new one