Barrington Garage Door Repair Co CALL NOW: (847) 443-9869
Our technician kneeling beside a garage door opening, holding a small level against a safety sensor mounted low on the door track

Sensor repair · Barrington, IL

Garage Door Sensor Repair in Barrington

Door that will not close, closes a few inches and reverses, or sits there with a blinking opener light? We come to your garage in Barrington and nearby northwest suburbs, test the safety sensors, and explain the fix and the price before any work starts.

CALL NOW: (847) 443-9869
  • Licensed and insured
  • Upfront quote before work
  • Parts-and-labor warranty

Safety eyes and wiring

Garage door sensor repair for doors that will not close

Garage door sensor repair deals with the pair of small safety eyes bolted to the door tracks, one on each side of the opening, about 4 to 6 inches off the floor. One eye sends an invisible infrared beam across the opening and the other receives it. If anything breaks that beam while the door is closing, the opener stops and reverses. That is a federal safety requirement on every residential opener sold in the United States, and it is the reason a door with a bad sensor refuses to shut.

Sensor trouble comes down to a few things. One eye has been knocked out of line by a bumper, a bike or a shelf. Dust, a spider web or a smudge covers the lens. A wire has been pinched, stapled, chewed or has pulled loose at a terminal. Or one eye has simply failed. Low winter sun hitting the receiving eye can also confuse it for part of the day.

If the opener light blinks and the door goes down only while you hold the wall button, the sensors are the first place to look. We find which of the causes it is and put the door back to closing normally.

Our technician holding a level against a vertical garage door track to check that it is plumb against the door jamb

Sensor diagnosis

What we check when sensors stop working

Alignment of both eyes

The two eyes have to face each other directly across the opening. A bracket knocked even slightly off angle breaks the beam. We realign both and secure the brackets so they hold their setting.

Lenses and the beam path

We clean the lenses and check that nothing sits in the beam: a stored item, a hose, a loose bit of weatherstripping or a leaning bin.

Wiring from eye to opener

The thin low voltage wire runs from each eye along the wall and ceiling to the opener. We follow it for pinches, breaks and loose connections at the terminals.

Indicator lights on each eye

Genie openers, like many others, show an indicator light on each eye. A steady light on both means the beam is connecting. A dim or flashing light tells us which side to work on.

Replacing a failed eye

When an eye is dead, a cracked housing or water damaged, we replace the pair so the sending and receiving ends are matched and compatible with your opener.

CALL NOW: (847) 443-9869

The sensor visit

How a sensor repair goes

  1. 01

    You tell us what the door is doing

    Does it reverse before it touches the floor, refuse to move, or only close on hold? Tell us what the opener light does. That narrows it down before we arrive.

  2. 02

    We come out and test the sensors

    Our uniformed technicians check the alignment, lenses, wiring and indicator lights, and run the door to see exactly where it stops and why.

  3. 03

    We explain what we found and the price

    You hear the cause in plain words, and you get an upfront quote before any work begins. Some sensor problems are a quick realignment, and we say so when that is the case.

  4. 04

    We fix it and test the reversal

    We realign, rewire or replace what needs it, then close the door several times and check that it reverses when the beam is blocked.

CALL NOW: (847) 443-9869

Blinking opener light and a door that will not stay closed?

Tell us what it is doing and we will tell you what the sensors likely need.

CALL NOW: (847) 443-9869

Sensor work

Safety sensor repairs

Close view of a small safety sensor eye on a garage door track near the floor, lens facing out and indicator lamp glowing
A sensor eye mounted and aligned
A suburban two-car house with a new insulated steel garage door in a neutral color, flat panels and a row of plain windows, closed and level
A new insulated steel door, closed and level
A working opener on a finished garage ceiling, door fully raised, with a clean rail and tidy wiring
An opener running smoothly after repair

Sensor answers

Sensor questions

Why does my garage door go down and then back up?
The opener is reading a blocked or misaligned beam and reversing as a safety response. The most common causes are a sensor that has been knocked out of line, a dirty lens, or a damaged wire. A door that closes, then reverses before it reaches the floor usually points to the sensors.
How do I align my garage door sensors?
Start by wiping both lenses and checking that nothing blocks the beam. Then loosen the bracket on one eye, turn it until the indicator light is steady, and tighten it again. If the lights stay dim or the beam still fails, there may be a wire fault or a failed eye, and that is where we step in.
My Genie sensors are not working. Does that mean the opener is bad?
Not necessarily. A sensor fault stops the door even when the opener motor is fine. If the opener runs and the lights on the eyes are off or flashing, the problem is the eyes or their wire. When the wiring and eyes test fine and the door still misbehaves, opener repair is the next step.
Can I disconnect the sensors to get the door closing again?
No. Bypassing the sensors removes the safety reversal that stops the door on a child, a pet or a car bumper. Even if the door closes, it is no longer safe. We will repair the sensors so it closes with the protection working.
What decides the price of a sensor repair?
Whether it is an adjustment or a part. Realigning a bracket is a short job. A damaged wire run or a pair of replacement eyes costs more. You get the quote before any work begins, so you decide with the number in front of you.
Should I replace the sensors or the whole opener?
Replace the sensors when only they have failed. If the opener is old and has other faults, or its wiring cannot be repaired, a new unit may be sensible, and a new opener comes with sensors included. We check the opener and advise which is the better use of your money.

Serving Barrington, IL

Sensors not seeing each other?

Tell us what the door and the opener light are doing. Our licensed and insured technicians will come out, test the sensors and explain the fix before any work starts.

CALL NOW: (847) 443-9869