This is usually caused by a circuit overload (too many fixtures), a short circuit (a fault in the wiring or a fixture), or a ground fault. The first step is to unplug all devices on that circuit, reset the breaker, and then reconnect them one by one to identify the faulty . Here are some solutions when a power distribution box fails: Safety First: Make sure you are safe. Do not touch live parts, turn off the corresponding power switch to avoid the risk of electric shock. Make sure the power supply is. Electrical troubleshooting often reveals several common wiring issues that can cause light switches to malfunction. The most common issue is a tripped circuit breaker.
