THERMOSTAT WB24X10163

Remove the outer cover. Look for a ROUND (about the size of a nickel) device or anything discoloured or burned.
I read the schematics I enclosed inside the microwave. Look for (Flake sensor) remove the leads on both sides (2 leads) and check with an
Ohm meter. I should read shorted or CLOSED. Mine was open and burned. Obviously from metal object causing feedback. I connected the 2 leads together and the unit functioned perfectly. I ordered the part from the exploded view, installed the device (45 min tops) done. ??

*Took out all SCWs retaining Oven's Case, then lifted Case away.
* Instantly, I saw a TStat which had gotten so hot that heat charred its Quick-Disconnect's, (QD), insulators,
*Found, inside, a paper envelope containing a map-folded, GE Pub No.31-41077, so spent hours reading everything on this pages. The Schematic page showed me: my burnt TStat-part is the "Flame Sensor"; and if it remains Open, then 120VAC cannot pass it.
* So, what might have caused that sensor to become over heated?
In the GE-Pub, there is a paragraph dedicated to the Flame Sensor, and one sentence stuck out: "When replacing be sure to determine cause of failure." At this point the onus falls onto the DIYerselfer's cognition. I had long been using Beverage & Vegetable buttons, and could now see those auto-shut-off options depending on the Humidity Sensor. I measured resistance of that sensor's internal elements, to find values about 2X larger than in the GE-Pub, so I decided to buy a replacement Humidity Sensor, and Flame Sensor

removed the cover and checked the fuse, good. Followed wiring found the first thermal switch showing signs of extreme heat checked with ohm meter and was open. Replaced the terminals ,heat damage, installed new part worked good. I tried to find a wiring diagram but GE seems to think we don't need one. Although they send one inside the cover?? Probably some people should be real cautious trying to work on the power side of a microwave. I'm a trained Tech with 38 years in the power business. should have taken the wiring diagram out when I had the cover off but it said do not remove? So I didn't.

Used volt meter to confirm both thermostats were defective.

As soon as I opened up the microwave I noticed a burnt connection on the Thermostat. Received replacement Thermostat in two days. This was very easy to change once the cover was off. I also replaced the burnt push-on spade connector on the Thermostat. Putting the microwave's cover back on properly was the only challenging step! The microwave oven now works perfectly again. Really easy repair.

The most important part was to determine why the microwave not coming on. I had to check from start forward to determine where it was losing the current. after determined that the thermostat was not passing the current, that was it. After I received the part, I replaced the part and everything started working again.