Thermoelectric Aobosi wine cooler: one of the fans is noisy or not spinning, and cooling is weak.

Safety: Unplug the unit before working on fans.

• Access fans: Remove the rear panel to expose the external heat sink fan and, if necessary, the internal fan.
• Clean and test: Clean dust from the blades and housing. Spin the fan by hand; if it feels rough or does not spin freely, replace it.
• Check wiring: Ensure fan connectors are firmly seated on the control board.
• Replace fan: Install an Aobosi-compatible DC fan of the same size and voltage rating.
• Verify cooling: After replacement, run the unit and confirm improved airflow and cooling.