2026-07-19 7 min read
A garage door that won't open is more than an inconvenience. It traps your car, blocks access to tools and storage, and leaves you stranded when you need to leave fast. The good news is that many causes can be diagnosed at home before calling for professional help. Let's walk through the most common culprits and how to safely troubleshoot them.
Before you assume something is broken, eliminate the simple stuff first. Is the remote battery dead? Replace it and try again from different distances. Check if the wall button works. If the button responds but the remote doesn't, you've narrowed it down to the remote itself, not the opener or door.
Next, look at the garage door tracks on both sides. Debris, fallen tools, or even snow buildup can physically block the door. Walk the length of the track and clear anything in the way. I've seen homeowners waste hundreds on service calls only to discover a shovel was wedged in the track.
Look for visible damage to the door panels themselves. Dents or misalignment sometimes prevent the door from rolling freely. If a panel is badly bent, that's a job for professionals, but minor dents rarely stop movement entirely.
This is where things get serious. Garage door springs carry enormous tension. I've seen springs snap and send metal coils flying across a garage like shrapnel. Never, ever try to adjust or replace springs yourself. That said, you can look for warning signs.
Walk around the door with it closed and look at the springs mounted above the opening. If you see a visible gap or separation in a spring, it's broken. A snapped spring means the door is effectively dead weight, and the opener cannot lift it. This is one of the most common reasons a door won't open.
Also check the cables running along each side of the door. They should be taut and intact. If a cable is frayed or hanging loose, the door system is unbalanced and dangerous to operate. Learn more about spring failure in our guide to snapped garage door springs in Exeter.
Modern garage doors have photo eye sensors near the bottom of the tracks on both sides. These safety devices prevent the door from closing on objects or people. If one sensor is blocked or misaligned, the door won't operate at all.
Look at both sensors. They should have a clear line of sight across the garage opening. Wipe away dust or cobwebs. If one is angled or pointing the wrong direction, gently realign it. Many doors that seem stuck actually have a sensor issue. For a deeper dive into how these work, check out garage door photo eye safety in Exeter.
Make sure the opener unit is plugged in and receiving power. It sounds basic, but a tripped breaker or a cord accidentally unplugged happens more often than you'd think. Check your garage breaker panel and reset anything that's flipped.
If power is on and the opener hums but the door doesn't move, the motor is running but something is mechanically stuck. This could be a seized bearing, a binding track, or a frozen pulley. This requires professional intervention because the issue is internal to the system.
**Need garage door repair in Exeter today?** Call (978) 574-7767. We offer same-day service and can troubleshoot or repair your door quickly.
If your troubleshooting hasn't solved the problem, stop. Continuing to force a broken garage door can damage it further and create safety hazards. A door that won't open often signals something that requires specialized tools and knowledge to repair safely.
At Garage Door Exeter, we handle everything from stuck doors to broken springs to opener failures. We'll give you an honest estimate of repair costs before we begin work. Many homeowners are surprised to learn that a simple fix like a sensor realignment costs far less than a spring replacement. Visit our garage door repair services page to learn what we can do for you.
A garage door that won't open deserves prompt attention, but panic helps no one. Work through the checklist above safely, starting with the simplest checks and working toward the mechanical issues. If you've checked the remote, cleared the tracks, looked for broken springs, and aligned the sensors but the door still won't budge, it's time to call for help.
Contact us at (978) 574-7767 or schedule a free quote online. We serve Exeter and surrounding areas in New Hampshire. The sooner you address the problem, the sooner your garage door works again.
Why does my garage door open sometimes but not other times? Intermittent operation usually points to a failing remote battery, a misaligned photo eye sensor, or a weak opener motor. Start by replacing the remote battery and cleaning both sensors. If the problem persists, the motor may be losing power and needs professional inspection.
Can I manually open my garage door if the opener is broken? Yes, most doors have a manual release handle inside the garage. Pull the red cord to disengage the door from the opener, then lift it by hand. Caution: if springs are broken, the door will be extremely heavy and dangerous to lift alone.
How much does a garage door repair typically cost in Exeter? Costs vary widely depending on the issue. A sensor realignment might cost under 100 dollars, while a broken spring replacement can run 300 to 500 dollars. We provide free estimates so you know the exact price before we start work.
What should I do if my garage door is stuck halfway open? Do not force it. Engage the manual release, clear the tracks of debris, and check for a broken spring. If nothing is visibly wrong, call for professional help. A stuck door midway is often a sign of mechanical failure that needs expert diagnosis.
Is it safe to use my garage door if springs are broken? No. A broken spring means the door is no longer balanced, and the opener cannot safely lift the full weight. Operating it risks damaging the motor and creating a safety hazard. Have springs replaced before using the door again.