Safety: Always disconnect the unit from power before inspecting internal components.

Steps:

Check household power: Verify the outlet has power by plugging in another device. Reset any tripped breakers.
Inspect power cord: Look for visible damage. Gently wiggle the plug at the outlet and at the back of the unit (if removable) to ensure a solid connection.
Test outlet: Use a receptacle tester or multimeter to confirm correct voltage at the outlet.
Access control area: If the outlet is good, unplug the unit and remove the rear access panel to inspect the main control board and any inline fuses.
Check fuses: Some Whirlpool wine coolers include a small glass or thermal fuse on the board. Test for continuity and replace with the exact type and rating if open.
Board inspection: Look for burnt or cracked components on the main control board. If present, replace the board.

When to call a technician: If you are not comfortable testing live voltage or replacing fuses/boards, seek professional service.

Wine cooler does not power on at all; display is blank and no lights or sounds.

Possible Causes