Garage Door Services: Match the Symptom to the Right Repair

Read the Symptom Before You Pick a Service

Spend one minute at the door and answer three questions: what does the door do, what do you hear, and what do you see. Press the wall button and watch. A door that does not move while the opener motor hums is a different problem than a door that travels a few inches and stops.

Then look up. On most doors, a torsion spring sits on a steel shaft above the door opening; older or low-headroom setups use extension springs stretched along the horizontal tracks instead. A snapped torsion spring almost always shows a visible gap of about two inches in the coil — the single most useful clue you can spot without touching anything.

Finally, listen and look low. A bang like a firecracker from the garage usually means a spring broke. Grinding that worsens over time points to worn rollers or a track problem. A door that refuses to close while the opener light flashes usually means the photo-eye sensors — the small lenses mounted about six inches off the floor on each side of the opening — are blocked or out of alignment.

Symptom-to-Service Guide

Use this list to jump to the page that matches what you observed:

• Door will not open, opener hums or strains: spring repair first; if both springs look intact, opener repair.
• Loud bang, then the door feels extremely heavy: spring repair — stop operating the door.
• Door hangs crooked or one side droops: cable repair, or off-track repair if a roller has left the rail.
• Grinding, squealing, or popping during travel: roller repair or track repair; the noisy garage door page helps narrow it down.
• Door reverses in mid-air, opener light flashes: sensor repair.
• Remote works only up close, or the keypad is dead: remote and keypad service.
• Dented, cracked, or bowed section: panel repair.
• Daylight under the door, drafts, or water coming in: weather seal service.
• Nothing obviously broken, but the door feels rough: tune-up or a safety inspection.
• Rolling steel or sectional door at a business: commercial garage door service.
• Car trapped inside, or a door stuck open at night: emergency garage door repair.

The Order a Technician Diagnoses In

Technicians rarely start where homeowners expect. The first check is usually door balance: with the door fully closed, the opener is disconnected and the door is lifted by hand. A properly balanced door stays put around waist height; a door that slams shut is carrying more weight than its springs can hold. This one test separates door-hardware problems from opener problems in under a minute.

Springs are inspected first because they carry nearly all of the door's weight — a double-car insulated steel door can weigh well over 150 pounds, and the opener is designed to guide that weight, not lift it. After the springs, a technician checks the lift cables at the bottom brackets, then track alignment and roller condition, and only then the opener's travel limits, force settings, and sensor alignment.

A safety note before you inspect anything: torsion springs, extension springs, lift cables, and the bottom brackets they anchor to are under extreme tension. Look at them; never loosen, unbolt, or adjust them. Visual inspection, cleaning sensor lenses, and lubricating hinges are safe. Anything attached to a wound spring is not.

How to Submit a Useful Service Request

Every service on this site is requested the same way: describe the problem and submit the form on our contact page. The more precisely you describe the symptom, the better a technician can prepare. A strong request includes:

• Whether the door is a single or double, and roughly how old it is if you know.
• What happens when you press the button — no response, hum with no movement, partial travel, or reversal.
• Any sounds: a bang, grinding, clicking, or scraping.
• What you can see from the floor: a gap in a spring coil, a slack or frayed cable, a roller out of its track, a flashing sensor light.

Repair needs vary by door and hardware, so a technician confirms the actual fault on site — but a well-described symptom means the visit starts with the right checks instead of a cold search.