Wine cooler makes loud humming or buzzing noise from the rear while running.

Safety first: Unplug the cooler before touching the compressor or condenser. Components may be hot.

Steps to check and fix:

• 1. Move the unit slightly: Pull the cooler a few centimeters away from the wall to ensure it is not transmitting vibration to surrounding structures.
• 2. Inspect compressor mounts: Remove the rear panel and check the rubber grommets under the compressor feet. Replace any that are cracked, missing, or flattened.
• 3. Isolate tubing: Look for copper lines or condenser tubes touching the cabinet or each other. Gently bend them away and insert foam or rubber spacers to prevent contact.
• 4. Tighten panels: Tighten screws on the rear cover, base, and any internal brackets that may rattle.
• 5. Evaluate compressor noise: If the compressor itself is excessively loud, knocking, or grinding, it may be failing internally. In that case, consult a refrigeration technician for possible compressor replacement.