Possible causes for a refrigerator not making any sound or turning on include:
Power Supply Issues: Check if the refrigerator is receiving power by ensuring it's plugged into a functioning electrical outlet. You can also try plugging in another device to the same outlet to verify if it's working correctly.
Tripped Circuit Breaker or Blown Fuse: The refrigerator might be on a circuit that has tripped or a fuse that has blown. Check the circuit breaker box and reset any tripped breakers or replace any blown fuses.
Defective Power Cord: Inspect the power cord for any visible damage or wear. If it's damaged, it may need to be replaced.
Faulty Start Relay or Compressor: The start relay is responsible for sending power to the compressor. If it's defective, the refrigerator won't turn on. Similarly, a faulty compressor can prevent the refrigerator from functioning.
Thermostat Issues: If the thermostat is faulty, it may not be sending the correct signals to the compressor to start.
Control Board Problems: Modern refrigerators often have electronic control boards that manage various functions. If the control board is defective, it can lead to the refrigerator not turning on.
Whether or not your refrigerator is fixable depends on the specific issue causing the problem. In some cases, it might be a simple fix like resetting a tripped circuit breaker or replacing a power cord. However, more complex issues like a faulty compressor or control board might require professional repair, and it could be more cost-effective to replace the refrigerator, especially if it's an older model.
If you're not familiar with appliance repair, it's best to seek the assistance of a qualified technician or contact the manufacturer's customer service for troubleshooting and repair options. They can diagnose the problem accurately and recommend the appropriate course of action.