What is a common indicator of an electrical issue in appliances?

A common indicator of an electrical issue in appliances is the presence of sparking or a burning smell. This phenomenon often occurs when there is a short circuit, overheating wiring, or faulty components within the appliance. When electrical connections are compromised, it can lead to arcing or overheating, which may produce visible sparks and an acrid burning odor. This signals a potentially serious malfunction that could pose safety risks, including fire hazards or further damage to the appliance.

In contrast, while unusual color changes can indicate various wear or failures, they are not as direct an indicator of electrical problems. Excessive noise may suggest mechanical issues rather than electrical ones, and an inability to connect to Wi-Fi is primarily associated with connectivity issues unrelated to the appliance's electrical functioning. Therefore, sparking or a burning smell is a clear and serious indicator of electrical trouble that requires immediate attention for safety and proper operation.