CVM1790SS4SS General Electric Microwave - Instructions

I replaced the TCO (fuze) through the vent opening after removing the vent cover and several small panels with a screw driver for visible access.. Some of the screws require a small offset screwdriver because of the limited access. I did not have to drop the unit from the wall over the range and was able to access through the vent opening to replace to failed TCO with a new one. The TCO is wired in-line with the power and other fuses to the unit and when it fails the enitire unit is cold with no power to lights or function of any kind. The GE service rep. said that the unit needed a new smart board but that was not the problem and they are no longer made for the older unit. I discovered the repair by looking at YouTube for repairs for the GE Advantium 120 microwave/convection combo unit.

Remove upper grill, then control panel, then 2 screws hold door switch mounting bracket, that will let you roll the switches out to work on them. Remove each switch by carefully pushing back retainer clips. Diode a long pair of needlenose pliers is helpful. The control board in front of capacitor comes out with a flat screwdriver and pry up. Removing grnd wires helps

Used Google to locate parts dealers for GE.
Ordered from Partselect.

Part arrived a few days later and I easily put it in.

I thought the cost of this part was out of line but all others sold it for about the same.

Removed two Phillips screws removed old cover installed new cover secured screws. Easy Peezy
Parts select made it really easy

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.

Disassembly control panel and remove switch holder; test for micro switches for continuity. Holder had broken post on micro switch holder.

When removing a non-working door switch, you will see a hooked piece of plastic on the holder locker that looks like a latch. If you try to pull it back in order to either remove the bad switch or install a good one, it will likely break. Instead, you need to pivot the switch (It pivots on a little post which is fitted into a hole at the corner of the switch) out of position so that it is not held back by the 'latch'. Then lift the switch out. If you have to use lots of force anything, you're doing something wrong. Reverse all this when installing the new switch.

Part arrived next day! Thank you Parts Select. Holder bracket on older GE microwave was broken so MW would not start because door latch did not activate door switch. Removed front panel unplugged all the wiring (after I had taken a picture) to gain access to the holder bracket. Unplugged the three door switches. Removed two screws that held the holder bracket. Installed three new door switches into the new holder bracket. Positioned the bracket behind the frame and screwed back in the two screws. Snapped in this seven wire attachments, set the control panel back in the microwave and secured it with two screws. I only needed one screwdriver and one needle nose plier to remove the wire attachment from a door switch which made it easier to remove. 40 minutes.

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.

Unscrewed the control panel (2 screws), lift up and let hang, with a plan screwdriver open bracket holding the switch, unplug 2 wires, replace with new switch, plug in the 2 wires, push switch back into bracket. Then slide on the control panel, put the 2 screws back. Easy fix.

Remove 1 screw, remove light bulb and replace and replace screw. No problem.

Part just snapped into place and wires were reattached.

The first holder locker was shipped in a soft envelope and was damaged in shipping. I ordered a second holder locker with instructions to ship in a hard container and mentioned what happened to the first holder locker. The second holder locker was shipped also in a soft envelope and was received damaged.

I notified customer service and have yet to receive a response.

I now have the part on order with a local company.
Kenneth Files
(831) 688-0740

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

Replaced all 3 switches and Holder for all 3 switches. All is working great now.