YKMHS120EW3 KitchenAid Microwave - Instructions

Remove “over the stove” unit. Remove unit shell case. Unscrew and disconnect diode. Replace diode. Re-assemble. Put unit back in place.

Part of the support was missing. I had to remove the two switches and put them in the new bracket
Had the switches reversed and started blowing fuses. Reversed them and changed the fuse and it started working.

screwed in new bulb

Unplug appliance. Remove total of 7 phillips screws from sides and front of bottom panel . Panel front drops down, remove one socket screw and socket. Now have access for lineman' s pliers to unscrew bulb base. Reinstall socket, replace bulb and 7 panel screws. Restore power.

We needed a phillips head screw driver to remove the single screw holding the light bulb cover in place.
Removing the old bulbs was a little work, because they had come loose from the sockets. We unplugged the microwave, so we could grip the sockets with a tool. I think my husband used a needle nose plier for this.
The new bulbs screwed in easily, and then we refastened the light bulb cover with the phillips head screw driver.

Turn off power supply at breaker . Replace old bulb with new bulb .

Just opened the door and dropped in new part and viola!

Husband replaced the bulb

I had the help of a handyman, I'm 75 years young but not handy with tools

Spouse just screwed in the new bulb and reinstalled the light cover plate with the two screws. Took under a minute. Works great.

Unplug the microwave. Then remove the six screws that hold the lower panel which has the light bulb cover and a couple of vent filters. The light bulb sockets are on a fixture that is connected by a quick connect electrical connector. Disconnect that and the whole panel is free to access the bulbs. My bulbs were very fragile and trying to twist them out resulted in the glass twisitng loose with the base still in the sockets. I needed to use a needle nose pliers to remove the bases and then I replaced the bulbs and put every thing back together

Repair unsuccessful because they sent the wrong part, even after I questioned their selection. It is amazing how a company as large as Whirlpool cannot clearly indicate to the people who work for them how to order the correct part. The fault lies not in the individual who is putting the order in but with the company who cannot take the time to make sure that person is successful in completing their job. Will never buy a product from this company again.
As far as the shipping is concerned. It took forever, just to find out that the part was incorrect.
Better luck next time. right?

It was a very simple and easy fix, no tools needed. First, open the door to the microwave/oven and remove the glass plate and the plastic plate guide. Next, locate the whole in the center. Using your finger, find the drive coupling pin that sits just below the opening (half circle shape). Align the bottom of the drive coupling with the metal pin and press down. Replace the plate guide and plate. The grooves in the bottom of the glass plate should be aligned with the shape of the drive coupling. Test by setting microwave/oven to 30 seconds and watch for proper turning and alignment.

I removed the old base by unscrewing the12 screws and dropping down the metal bottom. I disconnected the light and unclipped the electrical wiring harness for the fan and removed the bottom base. I then reattached the wiring harness and light to the new base and reattached the base to the microwave with the 12 screws. It is now as good as new again!! Thank you for locating this hard to find part for me!

took it out of box wooolaaa fixed thanks fast shipping too...