Sensor repair · Boston, MA
Garage Door Sensor Repair
Describe the blinking light once and get connected with a local technician who sorts out the safety sensors.
- Calls answered around the clock
- Describe the blinking light once
- A local technician in Boston and nearby
- You get the quote and decide
Safety sensors
Why garage door sensors stop the door
Garage door sensor repair is the fix for a door that will not close, or that starts down and bounces back up, while the opener light blinks. Every opener sold in the United States has a pair of photo-eye safety sensors, one on each side of the door, mounted about 4 to 6 inches above the floor. One sends an invisible beam, the other receives it. If anything breaks that beam, or the two eyes no longer face each other, the opener refuses to close the door. That is the sensors doing their job, and the fault is usually small.
The common causes are simple. A bracket gets nudged by a bicycle or a trash bin and the eyes drift out of line. Dust, cobwebs or a film of road salt cover a lens. Low afternoon sun shines straight into the receiving eye. A wire is pinched, chewed or has corroded at the terminal. Less often, a sensor has failed and the garage door opener safety sensors need replacement.
In Boston, a garage with salt and slush tracked in all winter is hard on low-mounted sensors and their wiring, so a sensor that worked in October may misbehave by February. If the door is also slow or noisy, the opener itself may be involved, and garage door opener repair covers that side.
Diagnosis
What a technician checks first
Alignment of the two eyes
Each sensor has a small indicator light. A steady light on both usually means they see each other. A blinking or dark light means the beam is blocked or misaimed.
Lenses and the line of sight
The lenses are wiped clean, and anything stored near the door track that could cut the beam is moved.
Wiring and terminals
The thin wire from each sensor runs up the wall to the opener. The technician traces it for staples, cuts and corroded connections.
Brackets and mounting height
Loose or bent brackets are tightened or replaced, and the sensors are set at the same height on both sides.
Replacement when needed
If a sensor has failed or the wiring is damaged, a matching pair is fitted and the door is tested to confirm that it reverses on contact.
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Pick up the phone
The call is answered around the clock. No forms and no waiting on a reply.
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Describe what the opener is doing
Whether the light blinks, how many times, whether the door goes down part way and reverses, and what changed recently.
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A local technician calls you back
We connect you with a contractor who works in Boston and nearby, so the job is not handed to someone far away.
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You get the quote and decide
The contractor explains the repair and quotes it directly. You decide whether to go ahead.
A door that will not close is locked open for anyone walking past.
Describe the sensor trouble once and get connected with a local technician.
Boston, MA
Sensors set and the door closing again
FAQ
Questions about garage door sensors
Why does my garage door go down an inch and go back up?
The opener has lost the beam between the two sensors, so it treats the doorway as blocked and reverses. Misalignment and a dirty lens are the usual reasons, and a loose or damaged wire is the next most likely. Wiping both lenses and checking that both indicator lights are steady is a safe first look before calling.
Can I bypass the sensors to get the door closed?
No. The sensors are the safety system that stops the door from closing on a child, a pet or a car, and the opener is required to reverse when they are blocked. Holding the wall button down to force the door shut leaves the garage without that protection, so leave the repair to a technician.
Does the sensor problem mean I need a new opener?
Usually not. Sensor trouble is a repair on the sensors, brackets or wire and not on the motor. A new opener is worth considering only when the opener itself has also failed, and the contractor will tell you which it is.
What should I have ready when I call?
The brand of opener if you can see it, the colour and pattern of the lights on the sensors and the opener, and whether the problem began after something hit the track or after a stretch of bad weather.
Who does the repair and who gives the quote?
Boston Garage Door Expert is a referral service, so an independent local contractor does the repair and gives you the quote, and you decide whether to proceed.
Boston, MA
Ready to get the door closing again?
Describe the blinking light and what the door does once, and get connected with a local technician who handles sensors every week.