If your garage door won’t open, the most common causes are a broken torsion spring, a dead or unplugged opener, a disengaged trolley (the door is stuck in manual mode), an engaged lock or vacation switch, or a snapped lift cable. A broken spring is the single most frequent culprit, and it usually announces itself with a loud bang, followed by a door that feels far too heavy to lift. If you hear a loud bang and the door will not budge, do not force it open or try to replace the spring yourself. Torsion springs hold hundreds of pounds of tension and can cause serious injury. Call a professional at (650) 910-6090. Most other causes are quick, safe checks you can run in a couple of minutes.

Below, we walk through each likely cause in order, from the quickest fixes to the ones that need a technician — plus how to use the manual release safely, when a stuck door is a real emergency, and what repairs typically cost in the Bay Area.

Start Here: Quick Diagnosis

Match what you’re seeing with the likely cause and the right next step. Work top to bottom, since the top rows are the most common and safest to check first.

Broken Torsion Spring: The Most Common Cause

The torsion spring is the tightly wound spring mounted on a metal bar above the door. It does almost all the lifting work, so when it breaks, the opener no longer has the muscle to raise the door. You may have heard a loud bang, like a firecracker, when it snapped.

Here is the important part: with a broken spring, the door can weigh 150 pounds or more with nothing to counterbalance it. Do not stand under it, force the opener, or try to wind or replace the spring. Spring work needs special winding bars and training, and a slip can cause serious injury. This is a same-day job for a licensed technician.

Opener Problems: Power, GFCI, and Dead Remotes

If the opener shows no lights and makes no sound, it likely has no power — one of the easiest problems to fix. Check that the opener is plugged in, look for a tripped breaker, and test the outlet, since many garage outlets are GFCI-protected and can trip after a power surge or a rainy Bay Area night.

If the wall button opens the door but the remote or keypad does not, the fix is usually a dead remote battery. Swap in a fresh battery and try again. If nothing on the opener responds and power is confirmed, the motor’s logic board or gears may have failed, which a technician can diagnose quickly.

The Door Is Locked or in Vacation Mode

Sometimes the opener hums or clicks but the door won’t move because a manual lock is engaged. Many doors have a deadbolt-style lock bar that slides into the track, and a bumped handle can lock it. Check both sides of the door for an engaged lock and disengage it.

Modern openers also have a “vacation” or “lock” mode on the wall control panel that disables the remotes on purpose. If a lock light is glowing on the wall button, press and hold that button to turn the mode off, then test the door again.

Sensors, Tracks, and Cables

Safety sensors cause a lot of confusion. The two photo-eye sensors near the floor only affect closing, not opening. So if your door opens fine but reverses or refuses to close, that points to blocked or misaligned sensors — wipe the lenses clean and make sure both aim at each other with steady, matching indicator lights.

If the door only moves an inch or binds partway, check the tracks. Debris, a bent track, or a roller that has jumped out of place can stop the door cold. On rare cold mornings, weatherstripping can freeze to the concrete. Never force a stuck door — that can bend panels or worsen the problem. A snapped lift cable is more serious: the door may hang crooked or sag on one side. Stop using it and call a technician.

How to Use the Manual Release (Red Cord) Safely

The red cord hanging from the opener rail disconnects the door from the motor so you can move it by hand. This is how you get out during a power outage. Follow these steps carefully.

• First, fully close the door if you can, or make sure it is all the way down before pulling the release. Releasing an open door can let it drop.
• Confirm nothing is under the door and no one is standing in its path.
• Pull the red cord straight down to disengage the trolley from the opener carriage.
• Lift the door by hand with a smooth, even motion. If it feels extremely heavy or won’t budge, stop — that points to a broken spring, and forcing it is dangerous.
• To reconnect, pull the red cord back toward the door (or push the lever) until it clicks, then run the opener once so the trolley re-latches automatically.
• If the opener motor runs but the door still won’t move after re-engaging, the trolley may not be catching — that’s a quick fix for a technician.

When a Stuck Garage Door Is an Emergency

Some situations shouldn’t wait. If your car is trapped inside and you need to leave, if a spring or cable has snapped, if the door is hanging crooked or partly off its track, or if it slammed down unexpectedly, treat it as urgent. A door under broken-spring or cable tension can be genuinely dangerous.

We’re open 24/7, so if you can’t safely open or secure your door, reach out for emergency garage door repair in San Jose and across the South Bay. It’s better to have a licensed technician handle a tension component than to risk an injury.

Garage Door Repair Costs in the Bay Area

Prices depend on the part and the door, but here are typical 2026 ranges for the South Bay and Peninsula; call (650) 910-6090 for an exact quote. A torsion spring replacement commonly runs about $200 to $400 for a standard single-spring door, and more for heavy double-spring doors. A snapped cable repair is often $150 to $250. A full opener replacement is usually several hundred dollars installed, while sensor, lock, and roller fixes are typically the least expensive service calls.

For non-urgent problems, or if you just want a professional to inspect a door that’s acting up, you can schedule garage door repair in San Jose and the surrounding cities, including Santa Clara, Sunnyvale, Cupertino, Campbell, Los Gatos, Milpitas, and Mountain View.

Because a door that won’t open can involve a dangerous broken spring, the U.S. Consumer Product Safety Commission offers garage door safety guidance.