Inspect and secure the rear access panel

1. Unplug the refrigerator from the power source for safety.

2. Locate the metal access panel on the back of the refrigerator that covers the compressor and condenser area.

3. Check for loose screws, warped metal, or gaps between the panel and the cabinet frame that could cause rattling or vibration during operation.

4. Tighten all mounting screws and, if necessary, apply a small piece of adhesive foam tape between the panel and the frame to dampen vibration.

5. Reconnect the power and verify if the noise has been eliminated.