Rattling or clanking noise when the compressor starts or stops.

Safety first: Unplug the cooler before touching internal components.

Steps to address rattling noises:

• 1. Check bottle arrangement: Ensure bottles are properly seated on shelves and not touching the cabinet walls or each other excessively.
• 2. Inspect fan and shroud: Access the rear compartment and verify that the condenser fan and its shroud are secure. Tighten any loose screws.
• 3. Compressor mounts: Confirm that the compressor is firmly mounted on its rubber grommets. Replace worn grommets if there is excessive movement.
• 4. Internal compressor noise: If the noise clearly comes from inside the compressor shell and persists, it may indicate internal wear. The compressor may continue to operate but could eventually fail; replacement requires a professional.