The two sensors near the floor watch for anything under the door as it closes. Openers sold since 1993 are required to have them as a second safety system. When they're blocked, out of line or damaged, the door won't close or reverses partway down.
Safety Sensor Repair in Grain Valley
Zach checks the sensor lights, cleans the lenses, lines the sensors back up and checks the wiring. If a sensor is damaged he replaces it, and he tests the auto-reverse before he leaves.
Garage Doors in Grain Valley
Standard springs are commonly rated for about 10,000 cycles, which a door running four times a day uses up in about seven years. Homes built in the 2000s and 2010s are right at that point, so first spring failures are the most common call here.
What to Expect
Call or text Zach at (816) 804-0072 and tell him what the door is doing. A photo or short video helps him bring the right parts. He gives you the price before he starts, does the work himself, and tests the door before he leaves.
More on this service: the full safety sensor repair page. More on Zach's work in town: the Grain Valley page.