Upon arrival, I assessed the garage door and identified a broken torsion spring as the root cause of the malfunction. I began by disconnecting the broken spring from the garage door mechanism, ensuring safety by securing the door in the closed position. I then removed the old spring, taking care to handle it properly to avoid injury. After measuring and selecting the appropriate replacement spring, I installed it by reattaching it to the door mechanism. I tested the door to confirm the spring was functioning correctly and adjusted the tension to ensure smooth operation. The job was completed by cleaning up the work area and providing the customer with a detailed explanation of the repair and maintenance tips for future reference.