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Retaining clips on original grill were broken
With new replacement grill, a separate clip was supplied in the box that had to be screwed in to the top portion. This clip did not fit since the hole for the screw was on the right side and not the left, so I just snapped the grill in place with the existing clips. There must be another clip that fits this unit but perhaps the person packing the box grabbed the wrong clip and taped it in with the shipped box.
Original vent grille clips broke off, so the grille would not stay on.
Just installed the new grille in place of the old one. (That is after I received the correct one, since I initially ordered a white one which definitely did not go with my stainless microwave!)
Dropped the glass cooking tray and it broke in half
Looked up the Whirlpool Co. and ordered the part. It was quite simple. Arrived in 2 days and I simply placed it in the microware. It was very very easy!
After removing the over-the-range unit (no small feat!) I had to figure out how to open the case (good puzzle!). Capacitor had already discharged, so it was very easy to reach in, pop the old fuse and install the new one! As per your advice, I found out I was a "28%-er"! Upon re-installation, the microwave "sprang to life"!! Thanks, "Part Select"!! I was already shopping around for a new machine! (Now if you could only tell me an easier way to re-mount this heavy beast over the stove!!!)
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