Refrigerator will not power on at all; display dark and no sounds.

Safety first: Turn off the breaker before inspecting the outlet or cord. Use caution when later testing live voltage.

Steps:

• Check breaker and outlet: Reset the breaker and test the outlet with another appliance or a multimeter.
• Inspect power cord: Look for visible damage or burns. Replace if compromised.
• Control board fuse: Access the main control and check for an onboard fuse (if present). Test for continuity and replace only with the same type and rating.

Corrective action: If the outlet and cord are good but the unit remains dead, the main control board's power supply is likely failed and should be replaced. If you are not comfortable with live voltage diagnostics, contact a technician.