While you wait for answers, we may have found some information which could help you.
Click here for Door Stays Open
replacing light bulb in kitchenaid microwave 378KBL?
Light replacement for the microwave?
How can I replace the light in my microwave?
How to fix a light bulb in oven?
KA model KEMC378KSS01 microwave oven combo?
How can I fix a heating problem with our YKEMC307KS0 oven?