Microwave produces sparks or arcing inside the cavity, often near the side wall or waveguide cover.

Safety: Stop the microwave immediately by pressing STOP or opening the door. Unplug before cleaning or inspection.

Steps:

• 1. Remove metal: Ensure no metal utensils, foil, or twist ties are inside.
• 2. Clean thoroughly: Scrub away any burnt food or grease from the cavity walls, ceiling, and around the waveguide cover using a non-abrasive cleaner. Dry completely.
• 3. Inspect waveguide cover: If the mica cover is burnt, cracked, or has holes, remove it and replace with a Logik-compatible waveguide cover cut to size.
• 4. Check cavity coating: If paint is chipped exposing bare metal, touch-up with microwave-safe cavity paint following manufacturer guidance.

Do not operate the microwave without a waveguide cover in place.