Garage Door Sensor Repair Montreal
A blinking opener light and a door that reverses on its own almost always means a safety sensor problem. We diagnose, realign, or replace photo eyes on the same visit.
24/7 Service
Always Available
Local Montreal
Warranty Support
Local Pros
Montreal-based team
Written Quote
Before Any Work
Signs Your Safety Sensors Have Failed
Why Sensors Stop Working
Sensors knocked out of alignment by a broom or car door
Direct sunlight hitting the receiving sensor
Damp lens or spider webs blocking the beam
Cut or pinched sensor wires along the wall
Corroded terminals from Montreal humidity
Failed sensor after 10–15 years of use
Loose wall-button or opener terminal connections
Door Won't Close? Try This First
Before calling, take 60 seconds to check: 1. Look at both sensors near the floor — is one LED off or blinking? 2. Wipe both lenses with a soft cloth 3. Gently move each sensor so both LEDs glow steady 4. Check the wires along the wall for staples cutting into them 5. If both LEDs are steady and the door still won't close, the opener logic board or sensor unit likely needs replacement Never disable the sensors permanently — they are code-required. Call (438) 922-8583 for a same-day fix.
Our Sensor Repair Process
Test both sensors for power, alignment, and beam integrity
Inspect wiring from sensor to opener for cuts and corrosion
Realign and remount sensors to factory spec (usually 6" off the floor)
Replace damaged sensors with brand-matched units
Repair or rerun sensor wire as needed
Reprogram opener travel limits and force settings if required
Test auto-reverse with an obstruction under the door
Confirm door closes reliably from remote, wall, and keypad
Sensor Repair Services
Service Call + Diagnostic
Diagnostic included
Sensor Alignment & Cleaning
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Sensor Pair Replacement
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Sensor Wire Repair or Replacement
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Full Safety Reversal Test
Included
Written quote before any parts are replaced. Sensors are always replaced as a matched pair.