Guide · 2026-08-30 · 6 min read

Garage Door Won't Open: What to Check Before You Call Anyone

A door that won't open is either something delightfully trivial or the most common real failure in the fleet — and you can usually tell which in about three minutes. Work through this in order, and stop immediately at the spring step if the signs point there.

The trivial causes (check these first)

Dead remote battery — try the wall button; if that works, it's the remote. Locked-out controls — most wall consoles have a lock switch that disables remotes, beloved by curious children; check it. No power — is the opener's light on? Check the outlet (garage GFCIs trip in monsoon humidity) and the breaker. Disconnected trolley — if someone pulled the red release cord, the opener runs but the door doesn't move; re-engage per your opener's manual by running a cycle. And after an outage, some openers need their safety sensors to re-handshake — a power cycle at the outlet sorts the occasional sulk.

The big one: does the opener strain and give up?

If the opener hums, strains, lifts the door a few inches and stops — or the door is suddenly impossibly heavy to lift by hand — stop testing. That's the signature of a broken spring, and the opener is correctly refusing to lift a few hundred pounds of dead weight. Look for the visible gap in the spring coil above the door and read our spring guide. Don't keep cycling the opener (that's how gears strip and panels bend), and don't try to muscle the door up.

Stuck doors and jammed tracks

A door that starts up and stops at the same point has likely met an obstruction in the track — a bent section, a failed roller, or debris. Look along both tracks with a flashlight. Minor debris you can remove; anything bent stays hands-off, because a door in a bent track is off-balance and unpredictable. In peak summer, thermal expansion can also tighten a marginal door — one that only sticks on 115-degree afternoons is telling you its clearances were already borderline.

One more Arizona special: a door 'frozen' shut after a storm may simply have debris packed under the bottom seal — clear the threshold outside before assuming worse.

When to stop and call

Call rather than continue if: the spring shows a gap or the door is dead-heavy; a cable is loose, frayed or off its drum; the door sits crooked in the opening; anything is bent; or a vehicle is trapped and you're tempted to force things. All of these are same-day repairs for a stocked truck — and all of them get more expensive when the door is forced first. If it's simply an opener that died of old age, that too is typically a single-visit replacement.

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