PSB9120DF2WW General Electric Microwave - Instructions

I first read where someone had the same problem. Their solution was a burned-out fuse. I ordered a new fuse...installed it and that did not solve my problem. I revisted PartSelect and read how Marla (from Arlington, TX)solved her problem. I purchased a secondary switch and when it arrived, I made a copy of Marla's instructions and followed them to the letter. I installed the new secondary switch into the secondary space, put everything back together and the oven STILL DID NOT WORK. I had to take the latching panel apart again and test each switch to see if there was another bad one. I found that the third switch was burned out. So I took the new switch out of the second slot and installed it into the third slot. I tested the switches before reinstalling the latching panel. This time everything worked. So I put everything back together, reinstalled the microwave on the wall, tested it again, and everything worked perfectly.

unplugged power
removed main black cover.
located part WB24X10047 and replaced

remov cover to check voltage and found problem at the interlock switch ohm the switch and found it was open replace both switches it work fine now

Went on Youtube and pulled up how to fix a microwave.

With this model, you must remove the outer covering. Don't try to access the display unit from the front like I've seen in some other GE microwave videos. After removing the outer covering, the switches are easy to replace. They are very visible and easy to get to without taking any other parts off. You will see the door switches just behind the display board. Remove the switch and then remove the connecting wires to ensure you don't inadvertently brake a wire. You will need a tamper resistant star bit to remove 3 or 4 screws from the back panel. All other screws are philips head. I went ahead and replaced both switches (yes...there are two of them) and works like a charm. I saved an $800 microwave for less than $60 and know what to do if it happens again. Appears to be a common problem on this model. Thanks for others making a post...It saved me time and money reading others remarks. Good luck!

Followed instructions that came with bulb I ordered and could not have been easier. Will use this site again.

.Shut breaker to microwave
. Remove two screws on each side of microwave cabinet frame holding it to the wood frame
. Get assistance in pulling microwave out of cabinet
.unplug power cable before pulling microwave completely out of cabinet
. Microwave has two separate panels top and sides removed all screws around frame along the door and sides
. Remove top steel panel
. Remove sides
. Locate screws around the electrical board screen just behind the front cover
. Use small flat head screwdriver to move plastic fasteners on each side of the electrical to release the board.
. Identify the LCD screen board and remove two screws on each side unplug the wire harness from the board.
. Lift LCD board off the two set pins
. Replace board
. Replace screws
. Plug harness back into board
. Reassemble electrical board back into display panel. Pay attention to re-engage the two plastic clips before replacing screws.
. Once panel is completely replaced.
. Resemble all panels in reverse order
. Test microwave before installing unit back into cabinet.

First I had to accept the fact that the unit was designed to keep non-professional people from doing any repairs. The switch was installed in such a manner that I had to break the mounting to remove the switch, then drill a hole in the mounting to secure the new switch in place.

I went for the cheap things first. Ohmmeter showed one of the thermostats in the magnetron compartment was open. I ordered and replaced all three thermostats. Still no heat. I took the unit off the wall (aaarrgh!) and checked the oven cavity thermal cutout. It said 7 ohms. I tested by shorting the wires together, but still no heat. So, I ordered the magnetron and diode cable. When replacing the diode cable (be sure to discharge the big cap!) either I broke it, or it was already damaged. It came off in two pieces. The new diode cable was re-enforced with thick heat shrink tubing, to prevent such breaking. You need a very short screwdriver to replace the magnetron. Now, all fixed! ~$150. A new one lists for $2000, installed in the overhead. My wife thinks I am a genius.

Part Select sent the wrong part I did not realize it until prong broke off one of the bulbs. They sent 130v instead of 120v. Return bulbs awaiting resolution.

Checked all sensors with a multi-meter, found the thermostat to be the problem, no continuity.

Our Microwave’s Halogen Light Bulb burned out.

We looked in our manual and were able to take the cover off to get to the bulb, but we were unable to unscrew the builb and the bulb in the manual did not match the size of the one you offer (size and part number were different)

We called 1-888-738-4871.

Gentleman who answered was very knowledgeable: answered all of our questions (PULL THE OLD BULB OUT) and assisted us by ordering replacement bulbs.

We (more importantly my wife) were very pleased with the result.

change bulb

Replaced the fuse. Result; did not fix the problem.

Replace the fuses