What this service covers
The most common call is the simplest to fix: the door starts closing, then reverses and the opener light blinks. That is nearly always the safety sensors being misaligned or obstructed, not a failing motor.
Where a unit genuinely has failed, the honest question is repair or replace. A stripped drive gear on an otherwise healthy opener is worth repairing. A twenty-year-old chain drive with a dying board, no rolling-code security and no battery backup usually is not, and you will be told which of the two you have.
Signs you need opener repair
If any of these describe your door, this is the service you want. If you are not sure, describe the symptom on the phone and we will tell you which it is.
- The remote does nothing but the wall button works, or the other way around
- The door starts to close, then stops and reverses to fully open
- The opener light blinks in a repeating pattern and the door will not close
- The motor runs continuously but the door does not move
- Grinding from the opener housing with no movement — a classic stripped drive gear
- The door reverses the moment it touches the floor
- The opener works intermittently, or only from very close range
- Nothing at all happens, with no light and no motor sound
What the technician does
- 1
Separate opener faults from door faults
The technician disconnects the trolley and moves the door by hand first. A door that is heavy or binds by hand has a spring, cable or track problem — and replacing the opener would not have fixed it. This one check prevents the most expensive misdiagnosis in the trade.
- 2
Test power, board and drive
Power supply, capacitor, logic board, motor windings and the drive gear or belt are checked in sequence, along with travel and force limit settings that drift out of adjustment over time.
- 3
Realign and verify safety sensors
Both photo-eyes are cleaned, realigned until the indicator LEDs are solid, and the wiring is checked for staple damage and corrosion. The auto-reverse is then tested against a solid obstruction, which is the legally required safety behaviour on every opener.
- 4
Repair or replace, then reprogram
Gears, sprockets, belts, trolleys, boards and sensors are replaced individually where the unit is worth keeping. If a new opener is the better value it is installed, all remotes and keypads are reprogrammed, and you are shown how to pair a new remote yourself.
Parts and brands we handle
Openers and parts are handled across the brands common in Hamilton homes:
- LiftMaster and Chamberlain chain, belt and wall-mount jackshaft openers
- Genie chain and screw-drive openers, including ScrewDrive units
- Craftsman, Skylink, Marantec and Overhead Door units
- Drive gear and sprocket kits, belts, chains, trolleys and rail sections
- Logic boards, capacitors, limit switches and travel modules
- Photo-eye safety sensor pairs and sensor wiring
- Rolling-code remotes, wireless keypads, wall consoles and MyQ-compatible accessories
How long it takes
Sensor alignment and remote reprogramming are typically 30 to 45 minutes. A gear kit or logic board replacement runs about 1 to 1.5 hours. A full opener replacement, including reprogramming remotes and testing safety reversal, generally takes 2 to 3 hours.
Safety warning
Every opener sold in Canada since the early 1990s must reverse when the photo-eyes are broken or when the door meets resistance. Never disable, bypass or tape over the safety sensors to force a door to close — that behaviour is the direct cause of entrapment injuries involving children and pets. If the door will not close because of the sensors, the sensors are doing their job and something needs correcting.
Why this comes up in Hamilton
Hamilton garages produce a specific set of opener problems. Detached and unheated garages across the older east end and North End see condensation and cold-start strain on units that sit unused for days. Sensor brackets get knocked out of alignment by bikes, snow shovels and recycling bins in narrow single-car garages — the most frequent cause of the blinking-light call.
Winter adds a second layer. A door frozen to the slab by meltwater refreezing overnight will not lift, and the opener force setting will keep trying. Homeowners often assume the motor has died when the real issue is a bottom seal bonded to concrete. Salt-carrying slush also corrodes the low-voltage sensor wiring stapled along the wall, which produces intermittent faults that come and go with the weather.