Microwave exterior cabinet vibrates excessively or buzzes against surrounding cabinetry during operation.

Safety: Unplug the microwave before tightening screws or opening the cabinet.

Steps to reduce vibration:

• 1. Level the unit: Ensure the microwave sits flat on the counter or is properly secured to the wall/cabinet using the Tristar mounting kit.
• 2. Tighten screws: Check and tighten all external mounting and case screws.
• 3. Add padding: If the cabinet vibrates against adjacent surfaces, place thin rubber pads or spacers between contact points.
• 4. Internal check: With the cabinet removed, verify that the transformer, fan, and other large components are firmly mounted and not touching the cabinet walls.