Repairing a broken building hoist requires a systematic approach. First, ensure the hoist is powered off and disconnected from any power source to ensure safety. Identify the specific issue by conducting a visual inspection and possibly consulting the hoist's manual or a professional. Common repairs include fixing mechanical parts like gears, chains, or cables, or addressing electrical issues like faulty wiring or motor problems. If the hoist's control system is malfunctioning, it may require recalibration or replacement of components. In some cases, worn or damaged parts need to be replaced. Always follow the manufacturer's guidelines and safety protocols. For complex repairs, it's best to consult with a professional hoist technician to avoid further damage or safety hazards.