I took the cover off, and replaced the glass-- the difficult part, was ordering the glass..on the list of parts to order-- the description of the glass was mis-leading
Microwave was making terrible squealing noise; replacing turntable motor didn't fix it but replacing fan assembly did!
My microwave was squealing horribly and replacing the turntable motor (SUPER easy btw) didn't fix it. So I figured it was a spun bearing or bushing in the cooling fan (spoiler alert -- it was!). Installation was simple and did NOT require removing the cabinet-mounted microwave from its position above our stove: Unplug microwave, carefully unscrew the 2 screws holding the vent grate above the door, remove the grate, then unscrew the one screw holding the top of the control panel to the case. Carefully pivot top of control panel down and unhook it from the case (at the bottom of the control panel there are two little legs or extensions that insert into slots in the case). Then disconnect the 3 or 4 wires that attach the control panel to the wiring harness (I marked them each with tape so I would remember where they go, but you can just take a picture with your phone). Set the control panel aside. Where the control panel was, you will be looking at the fan, with a bunch of wires between you and it. Take another phone picture for reference, just in case. Disconnect the various wires, starting at the top right and working your way around clockwise. I marked each wire with a piece of tape and a number, starting from 1 and working my way around an imaginary clock face. I think I got to 12 and then the last two (sort of buried in the middle) I labeled as "0" and "-1" but you can use any numbering series you like. Once the wires are all disconnected you can gently push them aside and unscrew the two screws holding the fan assembly in place, and disconnect the fan wire. Then gently maneuver the fan assembly out the front of the case. Installation is simply the reverse of this simple disassembly process. Voila! Back to a nice quiet microwave.
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.
Two screws to remove upper from vent. Two screws to remove the didgit panel lift ip to remove and put aside remove the two screws that hold the door sensors. Depress the tab to remove the defective sensor disconnect the electrical connector and replace the new sensor snap it back into the holder install the two screws, install the didgital panel and vent panel to complete the job. Please be aware that there is a video of this procedure on Y tube
This repair was one of the easiest I've ever done. I turned off the power to the microwave at the breaker, lowered the bottom panel by removing the screws, disconnected the wires to the old motor, pulled it out by removing two screws attaching it, attached the new motor with the same screws, connected the wires to it and that was all. The turnable has worked perfectly (and quietly) since.