Why is my garage door opener not working?
A garage door opener stops working because of a broken door spring, a blocked or misaligned photo-eye, lock mode on the wall control, a dead remote battery, a failed capacitor or logic board, or a stripped drive gear. A humming motor with a still door usually means the spring.
The opener only moves the door. The springs carry its weight, so a door with a broken spring is too heavy for the motor, and the opener hums, strains or reverses. That is why a technician rules out the spring before opening the powerhead.
| Symptom | Likely causes | What happens next |
|---|---|---|
| Motor hums, door stays still | Broken spring, lock engaged, trolley disconnected or stuck on its stop bolt, failed capacitor, stripped drive gear | Technician: spring, capacitor and gear. Turn lock mode off yourself. |
| Door goes down, then back up | Photo-eye beam blocked or misaligned, an object in the door path, down limit set past the floor | Clear the path; a technician realigns the eyes and resets the limit. |
| Door reverses at the floor | Down travel limit or force setting wrong, door binding in its track | Technician resets limits and force after checking the door moves freely. |
| Lights flash 10 times | Safety-sensor fault on Chamberlain and LiftMaster units | Clear the beam; a technician fixes eye wiring or alignment. |
| Remote dead or short range | Battery, lock mode, lost pairing, LED bulbs near the receiver, military radio interference | Replace the battery yourself; pairing and receiver upgrades are technician work. |
| Door opens by itself | Stuck remote or keypad button, shorted wall control or wiring, a remote on a shared code | Technician tests the controls and wiring and clears stored codes. |
The step-by-step checks for each symptom are in the guide to a garage door opener not working.
Opener humming, reversing or ignoring the remote? Stop pressing the button: a motor straining against a heavy door strips its gear. Call (833) 752-1196: a call booked by 12 pm, Monday to Saturday, gets a same-day inspection visit, and the price comes before any part is changed.
Which garage door opener parts fail most?
The opener parts that fail most are the plastic drive gear, the start capacitor on AC motors, the logic board, the photo-eye sensors, and the remotes and keypads. Wrong travel limits or force settings cause doors that stop short or reverse at the floor.
Drive gear and sprocket
The plastic drive gear transfers motor power to the chain or belt. When it strips, the motor runs, the trolley stays put and white plastic shavings collect under the powerhead.
Capacitor
The capacitor starts an AC motor. A failed one leaves the motor humming without turning, the same sound a broken spring causes, so both get checked.
Logic board
The board reads the controls, sensors and limits and switches the motor. Storms and power surges damage it, leaving a dead unit or one that ignores its controls. After a coastal storm, garage door opener repair in Wilmington and Carolina Beach starts with that board, and a surge protector at the outlet guards the new one.
Photo-eye sensors
Two eyes, mounted no higher than 6 in above the floor, send a beam across the door path. A dirty, knocked or loose eye stops the door closing.
Remotes and keypads
Rolling-code remotes change code on every press: Security+ 2.0 on LiftMaster and Chamberlain, Intellicode on Genie. Dead batteries, lost pairing and radio interference stop them. Near MCAS Cherry Point, the base’s radio band is one more cause that garage door opener repair in New Bern rules in or out.
Travel and force settings
Limits set where the door stops open and closed; force sets how hard it pushes before reversing. More force never fixes a binding door; it only hides the fault.
Do you repair LiftMaster, Chamberlain and Genie openers?
Yes. Technicians repair LiftMaster, Chamberlain, Genie and Craftsman openers in chain-drive, belt-drive, screw-drive and wall-mount jackshaft versions. Rolling-code remotes such as Security+ 2.0 and Intellicode are re-paired to the receiver after a board or opener repair.
| Drive type | Checked at the repair |
|---|---|
| Chain drive | Drive gear, sprocket, chain tension, trolley |
| Belt drive | Drive gear, belt wear and tension, trolley |
| Screw drive | Carriage, threaded rod, motor start |
| Wall-mount jackshaft | Mounting on the spring shaft, sensors, controls |
A new logic board or receiver forgets every remote it knew. Before leaving, the technician re-pairs your remotes, keypad and HomeLink buttons and erases codes you no longer use; remote and keypad programming at home is covered in the guide.
Can a worn belt, chain or trolley be replaced?
Yes. A stretched chain, a cracked or frayed belt, a worn trolley and a bent rail are replaced on their own, so a sound motor keeps working without a new opener. The part is matched to the opener’s brand and rail, and the limits are reset after the swap.
- Chain
- A slack chain slaps the rail and jerks the door as it starts. Tension is reset first; a stretched or rusted chain is replaced.
- Belt
- A cracked, frayed or toothless belt slips on the sprocket, so the motor runs while the door stalls.
- Trolley
- The trolley rides the rail and links the drive to the door arm. A worn one fails to reconnect after a manual release.
- Rail and 8 ft doors
- The standard rail suits a 7 ft door. Technicians fit rail extension kits for 8 ft doors and replace a rail bent by a car.
- Motor type
- AC motors start through a capacitor; DC motors have none, run softer and accept battery backup. The motor type decides which parts fit.
- Release cord
- A snapped, frayed or missing red release cord and handle are replaced at the trolley latch, so the door can be disconnected in an outage again.
- Surge protection
- Storm surges kill logic boards. Technicians fit a surge protector for the opener, shielding a new board from the next surge.
Where a bonus room sits over the garage, a new belt keeps the opener quiet, and the page on garage door opener repair in Cary, NC compares belt and wall-mount units for that layout.
How do technicians fix a garage door opener?
Technicians fix a garage door opener by starting at the door, not the motor: they release the opener and check the door’s balance, then test the sensors, controls and powerhead. You get the price before any work starts, and reversal is re-tested before the technician leaves.
Release
Release the opener and lift the door by hand to check the springs and balance.
Test
Test the photo-eyes, wall control, remotes and keypad.
Open
Open the powerhead to check the gear, capacitor and logic board.
Quote
Quote the repair; the work starts only when you say yes.
Reset
Reset travel limits and force, then run the 1-1/2 in contact-reversal and photo-eye tests.
No trip fee. An opener call carries no trip fee, wherever you live in our area.
Price first. The technician prices the opener repair on the spot and waits for your yes.
Manufacturer warranty. Replacement gears, boards and sensors carry their maker’s warranty.
Servicing a cord-connected opener is exempt from electrical licensing under North Carolina law (G.S. 87-43.1(7)), so the repair needs no electrician. A garage with no ceiling outlet for the opener is different: adding a receptacle is work for an electrical contractor.
When should a garage door opener be replaced instead of repaired?
Replace a garage door opener when it has no photo-eye sensors or fails to reverse, when replacement parts are no longer made, or when the logic board and motor fail together. Openers made before January 1, 1993 predate the federal entrapment rule.
An opener built after 1993 whose model is out of production is still a repair when its logic board or drive gear can be sourced by the model number on the motor label; Greensboro garage door opener repair runs that search before a replacement is priced. Half of Durham County’s homes were built in 1993 or earlier (ACS 2020–2024 5-year), so an original opener there can predate the rule; automatic garage door repair in Durham ends with the photo-eye and auto-reverse tests. Wake County is the reverse case: half its homes date from 2000 or later, so an opener original to one of those homes postdates the rule, and garage door opener repair in Raleigh starts with the gear, board and sensors. Mecklenburg County falls between the two, with a 1997 median build year, and garage door opener repair in Charlotte closes every job with the photo-eye and 2-second reversal tests.
No photo-eyes
No sensors, or a failed reversal test that a repair does not cure.
Discontinued parts
Gears, boards or receivers for the model are no longer made.
Board and motor
Both failing at the same time.
Pre-1993 manufacture
Built before the federal entrapment rule (16 CFR 1211, UL 325) required photo-eyes and auto-reverse.
Noise
A chain unit under a bedroom, where a belt drive is quieter.
Selling your home? Since June 1, 2026, North Carolina home inspectors report an opener that fails to reverse or has no photo-eyes (11 NCAC 08 .1107). The technician tells you at the visit whether a repair clears that item or only a replacement does.
When the answer is a new unit, the technician prices an opener replacement at the same visit, before any work.
What affects the cost of garage door opener repair?
Opener repair cost depends on the failed part, the drive type and brand, whether parts for that model are still made, and whether a door fault such as a broken spring caused the failure. The price is stated before any work starts.
Failed part
A sensor realignment or remote pairing, against a new gear, capacitor or logic board.
Drive type and brand
Chain, belt, screw or wall-mount, and the maker’s parts for that unit.
Parts availability
Current parts, or a model whose parts are discontinued.
Door faults
A broken spring or binding track found at the visit and fixed with the opener.
You hear the full opener price at the door, with no trip fee, and nothing starts until you agree. Request an opener repair quote or Call (833) 752-1196.
What if the opener is fine but the door is not?
Some faults that look like the opener start at the door. A door fault is behind many opener complaints: a broken spring leaves the motor humming, and a binding track makes the opener reverse. Fixing the door restores the opener, while forcing the opener harder damages its gear.
A snapped spring, a slack cable or a roller out of its track all need the door fixed first, and the technician checks each one on an opener visit. Those jobs are covered under broken garage door repair. The same order holds on older doors: half of Forsyth County’s homes date from 1984 or earlier, and garage door opener repair in Winston-Salem starts with the springs and cables before the motor.
A door stuck open at night with a broken spring is a security problem, not only an opener one. Leave it where it is and do not pull the release cord: without the spring, the door’s full weight drops. Night or weekend, a person picks up the phone, and the page on emergency garage door opener repair covers what to do until the visit.