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Common Garage Door Sensor Problems and Easy Troubleshooting Tips

If your garage door starts down, then suddenly reverses for no obvious reason, the sensors are usually the first place to look. I have seen homeowners assume the opener is dying, the remote is faulty, or the whole system needs replacing, when the actual problem was a crooked sensor bracket, a dirty lens, or a wire nicked by a rake handle. Garage door sensors are simple devices, but they sit in a rough environment. They are mounted low to the ground, close to dust, water,