Frequent tripping is a common indicator, as the breaker may be overloaded or have a short circuit. Flickering lights, buzzing or crackling sounds, or a burning odor near the breaker panel can also suggest a problem. Hot spots on the breaker panel or sparking inside the panel are serious warning signs of a faulty breaker. Dimming or intermittent power in certain areas of your home can also point to a faulty circuit breaker. These signs warrant an inspection by a qualified electrician to avoid potential hazards or damage.