Had preheated the convection/microwave oven to bake 2 frenchbread pizzas for 25 minutes. Placed aluminum tray on top of glass plate with pizzas. 20 minutes into baking the plate cracked in half. Why? Don't know. Never had before.
Unpacked glass plate from cardboard box and placed atop rotating spindle inside oven - done.
Microwave would act like it's working but the turn table didn't spin and the food would not heat up.
Removed the top vent cover (2 screws) and removed the control panel (1 screw). Replaced the door's top interlock switch. The switch bracket tabs broke but a good zip tie worked just as well.
Inserted a kitchen knife between the cover and the inside top of the microwave. Pry out the small plastic keeper pin located in the front of the stirrer cover and save for reinstallation. Twist the cover and gently remove. Remove the metal fan and insert it in the new cover. Reinstall the cover and twist to align the hole for the keeper pin. Reinstall the keeper pin and push the cover and pin up tight against the inside of the microwave.