Rattling or clanking noise when the compressor starts or stops.

Safety: Unplug the cooler before making adjustments.

Steps:

• Check shelves and bottles: Ensure shelves are fully seated and bottles are not touching the cabinet walls, which can rattle during compressor operation.
• Tighten panels: Tighten screws on the rear access panel and any loose interior panels.
• Inspect tubing: Look for refrigerant lines touching each other or the cabinet. Gently bend them apart slightly to prevent contact, being careful not to kink the tubing.
• Monitor noise: Some brief rattle at start/stop can be normal for small compressors. If it becomes very loud or changes suddenly, consult a technician.