Part #11 on internal diagram cover plates. Do I need to replace after 4 years they are dark brown? What is the purpose for them?
Answer Hello Brenda! The plate cover W10120230 is to cover any wiring/metal/parts on the right side interior of the microwave. If removed and not replaced it can cause arcing/sparks in the interior of the microwave. If they do not have any holes or any damage to them they should be fine. Thanks.