Garage Door Won't Open? Troubleshooting Guide (Springs, Opener, Power)

A door that won't open is more urgent than one that won't close — it usually means a car is trapped, or the garage is the only way in or out. Before you assume the worst, walk through the checks below in order. Most "won't open" calls trace back to power, the lock button, or a disconnected trolley; a smaller number point to a broken spring or cable, which is not something to force.

Why Won't My Garage Door Open?

In rough order of how often we see them, a door that won't open is caused by:

• No power to the opener — unplugged, tripped breaker, or a dead battery backup after an outage.
• Lock or vacation mode engaged — the opener ignores the remote and sometimes the wall button too.
• The trolley is disconnected — the manual release cord was pulled, on purpose or by accident.
• A broken torsion spring or snapped cable — the door is too heavy for the opener to lift, not a DIY fix.
• Stripped opener gears or a failing motor — the motor runs, but nothing happens at the door.
• The door is off-track or physically jammed — a bent track, failed roller, or obstruction.

Check Power and the Lock Button First

Confirm the opener is plugged into a working outlet and check your breaker panel for a tripped breaker — a surprisingly common cause after a storm or power blip. Then check the wall control panel for a lock or vacation mode button; when engaged, most openers ignore remote signals entirely, and some ignore the wall button too. Holding that button down for a few seconds usually toggles it back off.

Opener Motor Runs but the Door Doesn't Move

If you can hear the motor running but the door stays put, look at the trolley on the rail above the door. If it's sitting still while the motor drive unit moves, the trolley has disconnected from the carriage — either the manual release cord was pulled or the connecting pin has failed. Pull the release cord fully to disengage it, then lift the door by hand. If it moves smoothly, reconnect the trolley per your opener's manual and retest. If the motor runs and the trolley moves but strains or grinds, the internal gears may have stripped, which is an opener repair or replacement, not an adjustment.

Broken Spring or Snapped Cable — Stop Using the Door

Torsion springs above the door (or extension springs along the upper track on older systems) carry almost the entire weight of the door; the opener motor is only strong enough to move a properly balanced door, not lift dead weight. If the door won't lift more than a few inches by hand, feels extremely heavy, hangs unevenly on one side, or you heard a loud bang from the garage recently, a spring has almost certainly failed. Cables can fail the same way, usually alongside spring wear. Do not keep running the opener against this resistance — it's how gears strip and how a partially-failed cable finishes snapping. This is a same-day repair technician visit.

The Door Is Off-Track or Physically Jammed

If the door moves partway and stops or resists unevenly, check the tracks for a bent section, debris, or a roller that's come out of the track — a door forced past this point can bind further or come off the track entirely. Stop and don't force it; an off-track door under spring tension is a safety hazard, not a DIY straightening job.

Using the Manual Release During a Power Outage

Every opener has a red-handled release cord hanging from the rail. Pulling it disconnects the trolley so the door can be lifted by hand — the standard way to get a car out during an outage. Lift slowly and evenly with both hands; if it feels unusually heavy or resists, stop, since that's the same sign of a spring problem described above, not a normal manual lift. Once power is back, pull the release again (or follow your model's reconnect steps) before using the opener so the trolley re-engages correctly.

When Troubleshooting Won't Fix It — Signs You Need a Technician

Call it in rather than keep cycling the opener if you're seeing any of the following:

• The door won't lift smoothly by hand with the trolley disconnected — a spring or cable problem.
• You heard a loud bang from the garage before the door stopped working.
• The motor runs but the trolley grinds, strains, or doesn't move the door — a gear or motor issue.
• The door hangs unevenly, is off-track, or binds partway through the cycle.

At that point it's a spring, cable, track, or opener-internals issue rather than a quick fix, and continuing to force the door risks a much bigger repair — or an injury. We diagnose the difference on-site, and in Broward County's humid, salt-air climate, corroded cables and cable-end fittings are common enough that we check those first on any "won't open" call.