Garage Door Won't Close? Start With the Symptom

Symptom 1: Starts down, reverses back up, opener light flashes

That flash is the opener telling you the photo-eye sensors vetoed the close. Out here the usual culprits are pure Arizona: dust film on the lenses after a monsoon blow — a haboob rolls through and our phones light up for two days — or the low afternoon sun flooding a west-facing sensor, which is why some doors refuse to close at 5pm and behave fine an hour later. Wipe both lenses with a soft cloth, check that each one's indicator glows steady (a blinking one is misaligned — nudge it gently until it holds), and clear anything in the beam's path: the rake handle, the trash can wheel, the kid's scooter. This fixes more "broken" doors than everything else on this page combined, and it costs nothing.

Symptom 2: Closes partway, stops or reverses — no sensor flash

If the sensors aren't objecting, the opener itself is. Two possibilities: something's physically resisting the door — look for a pebble or packed dust in the track, a bent roller, anything the door nose touches — or the opener's travel and force limits have drifted, so it believes it hit an obstruction that isn't there. Limits are adjustable, but here's our honest caution: cranking the force up until the door slams closed "solves" the symptom by disabling the safety margin — and often the real cause is mechanical resistance that's getting worse. If a track cleanout doesn't cure it, that's a diagnosis visit, not a bigger screwdriver: opener repair runs $100–$220 for most of what this turns out to be.

Symptom 3: Remote and keypad do nothing — wall button works

Somebody activated the lock feature on the wall console (usually by leaning something against it). Hold the lock button a few seconds and try again. If remotes are dead and the wall button is too, check the obvious — the opener's outlet, the breaker — and remember that August power flickers scramble opener memory; re-pairing a remote takes two minutes with the Learn button on the opener head. Keypads eat batteries in our heat faster than the manual suggests.

Symptom 4: Door feels dead-heavy, opener strains, or you heard a bang

Stop here — this one isn't DIY. A door that suddenly won't lift, or creeps down and slams, has almost certainly lost a torsion spring — the loud bang from the garage is the giveaway, and Arizona heat kills springs years ahead of their cycle rating. The opener was never designed to lift the door's full weight by itself; forcing it strips the opener's gears, turning one repair into two. Springs are under real tension and hurt people who improvise; this is the call-us one, and it's usually fixed in a single visit.

Symptom 5: Door is crooked, jerky, or grinding in the tracks

A gap on one side, a cable hanging slack, a door that shudders as it moves — that's a cable or track problem, and every cycle you run it makes the damage more expensive. Pull the red release cord only if the door is fully closed; otherwise leave it exactly where it is, keep cars and people clear, and get it looked at. Off-track doors are the one garage door failure that genuinely injures people.

The monsoon-season postscript

Every summer the same pattern: a dust storm rolls across Surprise, Buckeye, and Goodyear, and for the next week doors "mysteriously" refuse to close all over the West Valley. It's Symptom 1 wearing a costume — grit on lenses and in tracks. Wipe the sensors first. If your door still won't close after the two free fixes above, the truck's stocked for everything else: (623) 920-0059, same-day slots most days, whole-job price quoted before a wrench comes out.