Wine cooler will not power on at all; display is blank and no lights or fans run.

Safety first: Unplug the unit before opening any electrical compartments. If you are not comfortable working with mains voltage, contact a technician.

Steps to troubleshoot no power:

• 1. Check outlet and breaker: Test the outlet with another appliance and verify the circuit breaker is not tripped.
• 2. Inspect power cord: Look for cuts, burns, or kinks. Replace the cord if damaged.
• 3. Access control board: Remove the rear or bottom cover to expose the main PCB. Look for an onboard fuse (glass or blade type). Test for continuity and replace with the same rating if blown.
• 4. Examine board components: Check for burnt resistors, bulging capacitors, or cracked solder joints in the power supply section.
• 5. Replace control board: If the fuse blows again immediately or the board shows visible damage, replace the entire main control board.

Warning: Never bypass or upsize fuses; this can create a fire hazard.