Danger: Mains voltage is hazardous. Always unplug the appliance before opening any panels. Do not bypass safety fuses.

A completely dead De Dietrich wine cooler indicates a primary power issue.

Check outlet and breaker: Test the wall outlet with another appliance and verify that the circuit breaker or fuse has not tripped.
Inspect power cord: Look for visible damage to the cord or plug. Replace the cord set if any damage is found.
Access control board: Remove the top or rear panel to locate the main PCB and its fuse.
Test the fuse: With the unit unplugged, check the board fuse for continuity. If blown, investigate for shorts before replacing.
Board replacement: If the fuse is intact but there is still no power, the board's power supply section may have failed. Replace the main control board with the correct De Dietrich part.
Re-test: After reassembly, plug in the unit and confirm that the display lights and the cooler starts.

Wine cooler will not power on at all; display is blank and no sounds are heard.

Possible Causes