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  Introduction: Garage door sensors are vital safety features, ensuring smooth and secure operation. However, when these sensors malfunction, it can be frustrating and potentially dangerous. Understanding how to diagnose garage door sensor problems is crucial for maintaining a functional garage door system. In this guide, we'll explore common sensor issues and provide step-by-step instructions to troubleshoot them effectively. Understand the Basics of Garage Door Sensors: Garage door sensors are typically located near the bottom of the door tracks. They work by transmitting an invisible beam of light between each other. When the beam is interrupted by an obstruction, it signals the door to stop closing or opening. Check for Obstructions: The most common cause of sensor issues is the presence of debris, dirt, or objects blocking the sensor's path. Inspect the sensor area and remove any obstacles such as leaves, cobwebs, or tools. Clean the Sensors: Use a soft, dry cloth to cle...