Monitor Door Switch

I saw a similar problem description at partselect.com and was confident to take the challenge to repair it myself. (Thanks to partselect.com). When I opened the microwave cover I found 3 similar switches. 2 of them works the same way and the other in reverse direction. Image diagram provided to buy parts is helpful to identify the switch.
Steps:
Remove the built-in microwave from the wall and keep it in an open space.
Remove the microwave screws and take the cover out.
Remove the 2 screws(inside) from the plastic panel where switches are snapped in
Gently remove the faulty switch and replace with the new one.
(In my case the topmost secondary door switch was broken)

The switches are not the problem! The problem is in the tolerences of the latch housing. I have ordered two new housings (Upper & Lower) and will see if the tolerences are closer. If not I will try epoxying a shim to the plate that operates the microswitches. The other option is to file the mounting slots of the housing to allow adjustment, which would be iffy,keeping them from moving with use. The exploded drawings really need to be clarified. The scale is way too small. It was extremely difficult to pick out the individual parts of the mechanisiam.

All electrical worked (fan, lights, control panel) door switch was broke. Pulled the oven out. Took out two big screws from the cabinet above. (be careful not to drop oven)Set the oven on kitchen counter. Took off five screws that held the vent cover. Removed vent cover. Took out one screw that held the control panel. Lifted, turned and slid the panel into the space below so I could get to the upper door switch. Replace door switch and re-assemble.

I removed the unit from the wall removed the top two screws holding the panel above the door I the two screws holding the control panel removed the three switchs I found the top one to be blown and replaced it

Removed control panel first then removed bracket holding door switches 8 screws total very easy fix ????

After researching on line and watching installation videos, ordered all three switches and installed. Disassembly of microwave was simple, removing the bracket holding the switches was a little tricky, it sits behind a metal post and you have to angle and wiggle it out. One note of caution when replacing all three switches, be sure to install correct switch in correct location. Had two of one style switch and one of a second style, and put one in wrong place, causing microwave to power up again when door was opened. After thinking it through and doing a second disassembly, and double checking installation instructions, corrected problem and microwave now works fine.

This is sometimes described in other repair notes as "microwave 'runs' when door is open."
With power disconnected: Remove the microwave's metal grill surround. Three lower screws accessible with lower oven door open. Two screws accessible at top of microwave door opening with door open.
Remove microwave control panel: Remove two femaleTorx head screws (#27?) that secure the panel, accessible at right side of door opening. The right side of the control panel is secured by plastic tabs fitting into slots in the oven frame. Take good care to note how these tabs disengage from the slots (lift and shift). Tab breakage very possible! Once disengaged, the panel hinges outward and downward and is self-supported. It may be necessary to guide some of the wiring out of the way to fully lower.
There are three door switches, one "monitor" and two "secondary" switches. All switches are housed in a plastic frame, which must be lifted out of position for access, each switch is retained by flexible plastic, breakable-looking hooked fingers. Also note that the electrical connectors have tiny release tabs that must be depressed in order to pull them off of the switches. In my case the topmost switch, one of the "secondary" switches, was clearly bad since there was no "snap" or click when pressing the switch's button. Maybe you can determine which switch is bad before proceeding but I had ordered all three to avoid going through this exercise again any time soon.
Replace switch or switches, place switch carrier back into position and otherwise reverse the disassembly steps.

I replaced the switch at the bottom per instruction. I had both switches. I think it was the monitor door switch.It works fine now. Thank you Part Select .

Removed the outer cover to access the door switches. Turns out there were three switches, but I determined that only two were bad. When the small colored tab on the switch is pushed in it should make a clicking sound. The two bad switches had no resistance and did not make any noise when pressed. Removing the switch is relatively easy, you simply pull it away from a couple small tabs holding them in place. After reconnecting the wire leads, insert back into the holding tabs and install the cover.

Followed the online videos to enter the cavity to the switch holder. Noticed right away the dreaded capacitor was in back right corner behind where the touch pad had been removed. I isolated the capacitor with an old computer mouse pad for extra safety. Took some manipulations to get the switch mount out from behind the wire bundles. Once out front, easy to use small flat blade screwdriver to release each switch and replace with matching new switch. Only one switch was bad but replaced all three. Back together and working great.