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Is your garage door not closing in Boston? Safety sensors (photo-eyes) are required on all automatic garage doors and prevent the door from closing on people, pets, or objects. When sensors malfunction, your door won't close properly. AB Garage Door provides expert sensor diagnosis, alignment, and replacement throughout Greater Boston and Massachusetts.
Watch for these warning signs that indicate it's time to call for professional service.
The most common sensor issue—the door reverses or won't close at all.
Blinking lights on your opener often indicate sensor problems.
Sensors should have steady lights when properly aligned and powered.
If the door only closes when you hold the wall button, sensors are malfunctioning.
Works sometimes but not others—often vibration or alignment issues.
Cracked sensor housings, exposed wires, or impact damage.
Precision alignment to restore proper function.
New sensors when repair isn't possible.
Fix damaged wires or connections.
What to Expect
Budget-Friendly
Sensor repair costs depend on whether alignment, wiring repair, or sensor replacement is needed. Simple alignment is quick and affordable; full sensor replacement with wiring is higher.
Identify sensor issue (alignment, wiring, etc.)
Check sensor signals and connections
Align, rewire, or replace sensors
Test safety reversal function
Common causes include vibration from the door, loose mounting brackets, impact from objects in the garage, or foundation settling.
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