Garage Door Safety Sensor Repair in Perth
Door opens but reverses or refuses to close? The safety beams are the usual cause. We test, realign, rewire or replace them.
On this job
Beams checked on site
- Beams tested and realigned
- Wiring faults traced
- No call-out fee
- All of Perth
Quick Answer
Garage door sensor repair in Perth is the fix for a door that opens normally but will not close, closes a little and springs back, or only closes while you hold the wall button. The two photo-eye beams near the floor have stopped seeing each other, through misalignment, a dirty or sun-struck lens, damaged wiring or a failed unit. We test the pair, trace the cable to the motor, and realign, rewire or replace whatever has failed. There is no call-out fee and the price is settled before any work starts.
Why the beams stop the door, and how we get it closing
Nearly every automatic garage door fitted in the last twenty-odd years has a pair of small sensors either side of the opening, a hand's width off the floor. An infrared beam runs between them, and the opener will only close the door while that beam is unbroken. It is the door's main protection against closing on a child, a pet or a car bumper, which is why a fault in it locks the door open rather than shut. If you want to check the beams yourself before ringing, our guide covers the five-minute checks.
In Perth the beams have a harder life than most. A west-facing garage in Scarborough, Wanneroo or Baldivis gets low afternoon sun straight into the receiver lens, and the sensor reads that glare as a broken beam for an hour every summer evening. Sand and grit settle on the lenses, spiders build across them, and a wheelie bin or bike knocks a bracket a few millimetres out of line. Wiring is the other half: the thin twin-core cable to the motor head gets nicked by a whipper snipper, chewed at the skirting, or corrodes at the terminals. The door will not close page helps you tell a beam fault from a limit or spring problem.
Our visit starts at the sensors themselves. We read the indicator lights, clean and realign both units, and check the brackets are solid. Then the cable is traced to the motor terminals and tested end to end, because a sensor that looks fine can be starved of power by a break metres away. Failed units are replaced with a pair matched to your opener make, and the door is closed several times with the beam deliberately broken to prove it reverses. If the sensors pass and the door still misbehaves, the fault is in the drive, and opener and motor repair is the next step.
Common Problems We Fix
What's Included
- Both beam units tested and lenses cleaned
- Brackets straightened and the pair realigned
- Indicator lights read and explained
- Cable traced and tested from sensor to motor head
- Broken or corroded wiring repaired or rerun
- Failed sensors replaced with a matched pair
- Sun shields fitted where glare is the cause
- Door closed repeatedly with the beam broken to prove the reversal
How Our Repair Process Works
Tell us what it does
Will not close at all, reverses partway, or only fails in the evening: each one narrows the fault before we arrive.
A couple of things to try first
Over the phone we may ask you to wipe the lenses and look at the indicator lights, which sometimes solves it there and then.
Sensors and wiring tested
Alignment, lens condition, power at the units and continuity back to the motor.
Realigned, rewired or replaced
Most faults are alignment or wiring and are fixed on the spot; dead units are swapped for a matched pair.
Reversal proved before we leave
The door is closed several times with the beam blocked so you see it stop and reverse.
Cost Guidance
A sensor job is one of the smaller repairs on a garage door. What moves the price is whether the beams only need cleaning and realigning, whether cable has to be rerun along the wall to the motor, and whether the units themselves have failed and need a matched replacement pair. A late-night visit costs more than a daytime one. You get the figure before any work starts, and our general repair cost guide shows where a sensor repair sits against springs, cables and motors.
| Scenario | Guide Price | Notes |
|---|---|---|
| Safety sensors / photo eyes | $110–$220 | Replace and realign the safety photo-eye sensors. |
| Motor / opener not working (repair) | $180–$420 | Diagnose & repair the opener — gears, logic board, capacitor or limit switches. |
| Remote (extra / replacement) | $60–$130 per remote | Per remote, supplied and programmed to your opener. |
Approximate prices. Typical Perth price ranges, including GST, checked September 2026. A guide only, not a quote — your price is confirmed on site before any work starts. No call-out fee.
Why Choose ABC Garage Door Repairs
Safety kept, not bypassed
We never disable or bridge the beams to make a door close. The fault gets fixed properly and the reversal tested.
Wiring traced properly
A sensor fault is often a cable fault. We test to the motor head, not just the lenses.
Matched replacements
Replacement sensors are matched to your opener make, so they pair without fuss.
Priced before we start
There is no call-out fee and the price is settled before we touch the door. If it turns out to be the opener rather than the sensors, we tell you before going further.
Related Services
Areas We Service
ABC Garage Door Repairs provides this service across Perth, including:
Don't see your suburb? View all service areas — we still likely cover it.
Request QuoteFrequently Asked Questions
Misalignment is first: a bracket nudged by a bin, a bike or a car door puts the pair out of line and the door will not close. Dirty lenses come next, with sand, dust and webs blocking the beam. Then sun glare on west-facing garages, which only shows up late in the day. Wiring faults and a sensor that has simply failed make up the rest. Through a Perth summer the sun and grit cases climb noticeably.
A handy owner can, provided the pair is made for the opener and the low-voltage wiring is followed exactly, with the opener unplugged first. The catch is that a wrong or badly wired pair leaves you with a door that still will not close, or worse, one that closes without reversing. If in doubt, have us fit a matched pair and prove the reversal before we go.
Less than most people expect. It depends on the opener make, whether one unit or the pair is replaced, and whether new cable has to be run to the motor. Cleaning and realigning costs less again. We settle the price on the driveway before starting, and there is no call-out fee for the visit.
Unplug the opener at the wall for thirty seconds, plug it back in, and check the lights on both units are steady. On most makes a steady light on each means they are aligned; an off or flickering receiver light means the beam is blocked, misaligned or unpowered. Loosen the wing nut, tilt the unit until the light holds steady and tighten it again. Light colours and their meaning vary by make, so check the label or manual.
We would not, and we will not do it for you. The beams are what stop the door closing on a person or a car, and most current openers refuse a remote close without a working pair anyway. Holding the wall button down closes many doors in constant-pressure mode as a short-term way to secure the garage, but that is a stopgap, not a fix.
Almost certainly. Low sun straight into the receiver lens overwhelms it and the opener reads a broken beam, which clears once the sun moves, so the door works again after dark. Swapping the sensor sides so the receiver faces away from the sun, fitting a small hood over the lens, or moving the pair slightly further inside the opening usually cures it.
Cleaning and realigning takes minutes. Replacing a pair, or tracing and repairing a wiring fault along the wall to the motor head, is usually under an hour. Most sensor call-outs are finished the day they are booked.
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Book Garage Door Sensor Repair in Perth
Owner-run and based in Perth. Fill in the form with what the door is doing and we will come back with a price, or ring and talk it through.
- 0422 828 800
- , Bennett Springs WA
- Mon–Fri12 AM – 11:59 PMSat–Sun12 AM – 11:59 PM
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