FUSE

Turned out the issue was easily solved by replacing a single, inexpensive fuse.

First off, UNPLUG THE MICROWAVE.

The fuse is located under the plastic grill at the top of the microwave. It's held on by two screws. Once you've removed the screws and taken off the plastic grill, you go to the right side of the microwave and remove another screw that holds a small metal grill in place. Removing the small metal grill is probably the toughest part of this repair. You kind of have to rock it back and forth a bit to get it to release. Once that's off, you can get to the fuse. I removed the burnt out one with a pair of needle nose pliers. I also put a small piece of cardboard under the fuse when I did this so I didn't accidentally drop it into the innards of the microwave. I did the same thing when I replaced the new fuse. I then plugged the appliance back in and made sure it worked. Once that was confirmed, I replaced both grills.

Rmovd top vent screen. Removed control panel. Removed fuse cover panel. Replaced fuse. Removed housing of door switches. Removd wiring from door switches and and removed door switches from housing. Replaced with new switches and re-connectd wiring. Re-attached panels.

found fuse blown and heat damage to TCO sensor.

The old fuse is perfectly good. The new ones arrived within a day.

1. turned off electricity -- unplugged the unit 2. removed 3 screws on top of top vent, removed vent screen then I located the little white cylindrical fuse and popped it out with a table knife. Then I popped in the new fuse. Replaced the vent screen and screws -- plugged in the appliance and it is working again.

Went to onlin source, found a couple youtube videos then went to the GE site which had a not-too-easy that find trouble shooting guide. It was extremely helpful as it described a fuse as a fix 80% of the time for touch paid failure. I really didn't believe it would b a fuse, but it was the cheapest fix, $8. I got the fuse and was surprised to fine there are two of them on this model. I took a guess and replaced the top one ( neither fuse was black or burned to indicate a failure but the top one was a bit mor greyish). put it all back together and it works fine.

This did not fix my problem. I've ordered a new microwave.

First off, UNPLUG THE MICROWAVE.

The fuse is located under the plastic grill at the top of the microwave. It's held on by two screws. Once you've removed the screws and taken off the plastic grill, you go to the right side of the microwave and remove another screw that holds a small metal grill in place. Removing the small metal grill is probably the toughest part of this repair. You kind of have to rock it back and forth a bit to get it to release. Once that's off, you can get to the fuse. I removed the burnt out one with a pair of needle nose pliers. I also put a small piece of cardboard under the fuse when I did this so I didn't accidentally drop it into the innards of the microwave. I did the same thing when I replaced the new fuse. I then plugged the appliance back in and made sure it worked. Once that was confirmed, I replaced both grills.

took off upper grille and touch pad and removed the old line fuse and replaced with a new fuse ...turned on it is working fine...sources of help: UTube and GE manuel

So my microwave was turning on and operating but nothing would get hot or even Luke warm. After watching several online videos on the problem I replaced the line fuse, diode, and the magnetron. I figured why waste time and just do all 3 while I have the thing apart. I discharged the capacitor with a light bulb first before doing anything. Also had to pop the safety pins on the outside screws to take the metal housing off the microwave. Then Wallah! Everything is working and the food or liquid is hotter than it ever was. The only think that bothers me a little bit is that after the microwave shuts off, I can hear a few crackles or faint pops for about 5 seconds. I wonder if this is anything to worry about. Comments appreciated.

Microwave with no heat. Removed casing and checked low voltage side from the fuse through all the microswitches to the primary side of the transformer, all good. Checked HV diode good. Checked secondary side of transformer, good. Checked capacitor, good. Even though the Magnatron electrically checked out good, it had a cracked magnet. Replaced the magnatron and we have heat again!