Microwave produces a rattling or vibrating noise, especially at higher fan speeds or when the turntable rotates.

Safety First: Unplug the microwave before tightening any internal screws or brackets.

• Check installation: For over-the-range JennAir units, verify that all mounting bolts and brackets are tight and that the unit is level.
• Inspect turntable system: Ensure the glass tray is seated properly on the turntable coupler and roller ring. Replace damaged parts.
• Tighten panels: Remove the top grille and outer cover (if applicable) and tighten any loose screws on the blower housing, control panel, and side panels.
• Test and isolate: Run the unit briefly after each adjustment to identify which area is causing the vibration.