Microwave makes crackling or popping noises and may show small sparks inside

SAFETY: Stop the microwave immediately if you see sparks. Unplug before cleaning or inspection.

• Step 1 – Remove metal:
  • Ensure no metal utensils, foil, or twist ties are inside.
• Step 2 – Clean cavity:
  • Thoroughly clean the interior with mild detergent and water, focusing on the area around the waveguide cover.
  • Dry completely.
• Step 3 – Inspect waveguide cover:
  • Check the mica waveguide cover for burns, holes, or heavy grease.
  • Replace the cover if damaged, using a SilverCrest-compatible waveguide cover cut to the correct size.
• Step 4 – Cavity paint:
  • If paint is chipped down to bare metal, touch up with microwave-safe cavity paint according to instructions.

Do not operate the microwave with a missing or damaged waveguide cover.