What is the recommended action if a transformer is found to be malfunctioning?

The recommended action when a transformer is found to be malfunctioning is to replace the transformer immediately. This approach prioritizes safety and operational integrity. A malfunctioning transformer can pose significant risks, including electrical hazards, potential equipment damage, and disruptions in service. Replacing the transformer ensures that any underlying issues are addressed effectively, preventing further complications that could arise from continued operation of a faulty unit.

While performing repairs based on symptoms might provide a short-term solution, it does not guarantee the transformer will function reliably in the long run or address any underlying problems. Further isolating and retesting may be useful for troubleshooting but does not resolve the immediate risk associated with the malfunction. Ignoring the issue entirely until the next inspection can lead to severe consequences, including safety risks and system failures. Thus, immediate replacement is the most prudent course of action to maintain system reliability and safety.