Zionsville Garage Door Contractor
A technician in plain workwear crouching at the base of a garage door track to adjust a small photo eye sensor in a bright, tidy garage

Sensor repair · Zionsville, IN

Garage Door Sensor Repair

Sensors that blink, refuse to line up or leave the door stuck open. We clean the lenses, realign the pair, fix the wiring or replace the unit, and explain the price before any work begins.

CALL NOW: (463) 229-6519
  • Licensed and insured
  • Upfront quote
  • Parts-and-labor warranty

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Safety sensors

Garage door sensor repair when the pair stops agreeing

Residential openers sold in the United States are required to have an entrapment protection system, and photo eyes are the usual form it takes. They are two small units mounted no higher than 6 inches off the floor, one on each side of the door. One sends an invisible beam across the opening and the other receives it. If something breaks the beam while the door is closing, the door stops and goes back up. Garage door sensor repair is the work of getting that pair to agree again. We do it for homes in Zionsville, a town in Boone County, Indiana, next to Indianapolis, and in the nearby communities north and west of Indianapolis.

You see the problem when the door will not close, comes partway down and reverses, or the opener lights blink and nothing moves. When garage door sensors are not working, the cause is nearly always one of a short list. A bracket gets bumped by a bike or a lawn mower and the eyes no longer face each other. A lens collects dust or a spider web. Low sun shines straight into the receiving eye. The thin low-voltage wire running from each eye to the opener gets cut, pinched by a staple or pulled loose at a terminal. Or one of the units has simply failed.

The indicator light on each eye is the quickest clue. On many openers the two eyes show different colors, commonly amber on one and green on the other, and both lights should be steady when the beam is made. A light that is dark, flickering or blinking tells us which side to start on, and it is a good detail to give us when you call.

Close-up of a garage door photo eye sensor mounted on the track bracket near the floor with a small steady indicator light, clean lens in bright daylight
A sensor realigned and working

What we fix on sensors

What we do to repair a garage door sensor

Clean the lenses

A film of dust, a smear or a web across a lens is enough to weaken the beam. We clean both lenses with a soft cloth and check whether sun is hitting the receiver, since a short shade or a change of position often fixes that.

Realign the pair

Both eyes must be at the same height, firmly fixed to the track or wall, and pointed straight at each other. We loosen, aim and fix the brackets until both lights are steady, then watch the beam hold as the door travels.

Fix the wiring

We trace the wire from each eye to the opener, repair cuts, remove staples that pinch it and reseat the connections on the back of the opener. If the wiring is sound and the opener still does not see a signal, the fault may be the control board, and garage door opener repair covers that.

Replace the unit

When an eye has failed, we replace the pair together so the sending and receiving units are matched and work with your opener. A new pair is wired, aimed and tested on the spot.

Test the safety reversal

After the repair we break the beam while the door is closing and confirm it stops and reverses, then lay a board flat in the doorway and confirm the door reverses when it touches it. A sensor repair is not finished until both tests pass.

CALL NOW: (463) 229-6519

The sensor visit

How a sensor repair goes

  1. 01

    You tell us what the opener is doing

    Mention whether the lights blink, whether the door reverses or stays up, and what the lights on each sensor look like. It tells us where to start.

  2. 02

    We come out and test the pair

    A uniformed technician checks both lenses, the brackets, the wiring and the connections at the opener, and explains the problem before starting.

  3. 03

    We explain what we found and the price

    You hear what failed and receive the upfront quote before any work begins.

  4. 04

    We repair it and test the door

    We clean, realign, rewire or replace, then run the door through its cycles. Repairs and installations are backed by a parts-and-labor warranty.

Sensor lights blinking?

Sensors that will not cooperate can leave a door standing open all night.

Tell us what the lights are doing and we will tell you what that usually points to.

CALL NOW: (463) 229-6519

Aligned sensors

Sensors aligned and working

Close-up of a matched pair of garage door photo eyes mounted at the base of each side of a garage door opening, small steady indicator lights glowing, clean lenses in bright daylight
A matched pair of sensors facing each other
A freshly serviced white residential garage door, closed and square in its opening on a tidy brick home exterior in daylight

Sensor questions

Garage door sensor questions

What does it mean when one garage door sensor is green and one is yellow?
On many openers that is normal, because the two eyes carry different colored lights. What matters is that both lights are steady. A light that is off, flickering or blinking means the beam is not being made, and the cause is usually alignment, a dirty lens or a wiring fault.
How do I know the sensors are the problem and not the opener?
If the door opens normally but will not close, or comes down and reverses, and the opener lights flash, the sensors are the first thing to check. If the door will not open at all, or the motor runs without moving it, the fault is more likely in the opener or the springs.
Can I close the door while the sensors are not working?
Many openers will close the door if you hold the wall button down until it reaches the floor. That is a stopgap only, because the door will not reverse for anything in its path while you do it, so watch the doorway the entire time. Do not disconnect or bypass the sensors permanently, since they are what stops the door on a person, pet or car.
How much does garage door sensor repair cost?
Cleaning and realigning is a smaller job than rewiring or replacing the pair. If an older opener's control board is the failing part, a new opener may be worth comparing against the repair. The technician gives you the upfront quote before any work begins.
Can I align the sensors myself?
You can wipe the lenses and nudge a bracket until both lights go steady, and that is often enough. If it does not, stop before touching the wiring at the opener, and unplug the opener before reaching for any terminal. Tell us what the lights are doing and we will take it from there.
Do both sensors need replacing?
Usually yes. The sending and receiving eyes are made as a matched pair for the opener, and a new eye paired with an old one can leave the beam weak or unreliable. Replacing both avoids a second failure a few weeks later.

Sensor repair near you

Sensors blinking and the door won't close?

Tell us what the lights are doing. We will come out, test the pair and the wiring, and explain the fix before any work starts.

CALL NOW: (463) 229-6519