Microwave cavity paint is peeling or rust is visible inside.

Safety: Unplug the microwave before cleaning or painting. Do not operate with loose paint flakes inside.

Steps:

• Clean the cavity thoroughly and dry completely.
• Lightly sand loose or flaking paint areas to remove loose material.
• Apply microwave-safe cavity touch-up paint to bare metal areas following product instructions.
• Allow paint to cure fully before using the microwave.

If rust is extensive or structural: Replacement of the microwave is recommended, as severe cavity corrosion can compromise safety.