Red Seal Appliance Service Technician Practice Exam

Checking the power supply, circuit breakers, and appliance plug is essential when an appliance is not turning on. This step addresses the fundamental requirement for electrical appliances: a proper power source. If there is no power reaching the appliance due to issues such as a blown fuse, tripped circuit breaker, or a faulty plug, the appliance simply will not function.

By ensuring that the power supply is intact and that the appliance is plugged in securely, you can quickly identify whether the issue lies with the electrical connectivity or if further diagnostic steps are necessary.

While understanding the appliance's design, referring to the user manual, or reviewing recent repairs may have their place in troubleshooting, these do not address the immediate need for power verification, which is a critical first step in diagnosing appliance issues.