2026-09-25 6 min read
A customer called last Tuesday morning. Their garage door wouldn't open. The remote didn't work. The wall button did nothing. They'd already tried unplugging the opener, waiting five minutes, and plugging it back in. Now they were locked out of their garage with no way in. This scenario plays out in Derry and across southern New Hampshire more often than most homeowners expect. A broken garage door isn't just an inconvenience. It's a security issue and a safety risk that needs immediate attention.
Most garage doors that won't open fail for one of three reasons: the opener has lost power or reset itself, the door's mechanical parts are damaged, or safety sensors are blocking operation. See our guide: Garage Door Openers in Derry.
The opener itself is a common culprit. If your remote stops working but the wall button also fails, the issue likely isn't the remote batteries. Check whether the opener has power. Look for a red reset button on the motor housing. If the opener recently lost electricity due to a power surge or outage, it may need a manual reset. Some modern openers have built-in circuit protection that kills the motor when it detects a fault.
The garage door itself can also be the problem. Springs that hold the door's weight can snap or lose tension. When a spring fails, the door becomes extremely heavy and the opener cannot lift it. You'll hear a loud bang or snap if a spring breaks suddenly. The door may hang unevenly or refuse to move at all. Springs last roughly 7 to 9 years under normal use, so if your door is older, this is worth considering.
Safety sensors at the bottom of the door frame are another frequent cause. These photo eyes detect obstacles and prevent the door from closing on people or objects. If the sensors are misaligned, dirty, or blocked, they send a signal to the opener to stop. The door won't open or close. Most homeowners don't realize these tiny sensors are what's stopping them.
Before you panic, try these steps. First, check both the remote and wall button. If neither works, the problem is the opener or door, not the remote. Second, inspect the photo eye sensors on both sides of the door frame near the ground. Look for dirt, spider webs, or anything blocking the beam. Wipe them clean with a soft cloth. If they're misaligned, you may see a red or amber light on one sensor instead of a steady green or no light.
Third, listen carefully when you press the wall button. If the opener motor runs but the door doesn't move, a broken spring is likely. Do not attempt to repair or replace a garage door spring yourself. Torsion springs are under extreme tension and can cause serious injury or death if mishandled. This is a job for a licensed technician. If you want to understand more about how springs work and when they fail, read our guide to torsion vs. extension springs in Derry.
**Need garage door repair in Derry today?** Call (978) 645-3493. We cover same-day service across the area.
If the motor runs but makes grinding or squealing sounds, lubrication or track damage may be the issue. If the motor doesn't run at all, the opener needs attention. If the door is completely stuck and won't budge, this is a security risk. A stuck garage door leaves your home vulnerable and traps vehicles inside.
The cost of garage door repair in Derry depends on what's broken. A photo eye sensor replacement or realignment is inexpensive. A spring replacement is more costly because springs are under high tension and require specialized tools. If your opener needs replacement, expect a larger bill. For a detailed breakdown of what affects your repair estimate, check out our garage door cost guide.
Timing also affects cost and safety. A minor issue that's ignored often becomes a major repair. A misaligned sensor is cheap to fix. But if you keep forcing the door closed despite the sensor warning, you may damage the opener motor or the door panels themselves. Emergency repairs cost more than routine maintenance. Review our emergency repair cost breakdown to see what homeowners actually pay when they wait too long.
When you contact Garage Door Derry for repair, we start with a full inspection. We test the opener, sensors, springs, and tracks. We identify what's not working and why. We give you an honest estimate before we touch anything. We handle same-day service when possible because we know a stuck door disrupts your day and puts your home at risk.
Visit our repair services page to learn more about what we handle.
A garage door that won't open is not something to ignore or delay. The longer you wait, the greater the safety risk and the higher the eventual cost. If your door is stuck, broken, or not responding, schedule a free quote today. Call (978) 645-3493 and describe what's happening. We'll help you understand the problem and get you back to normal quickly.
Why won't my garage door open even though the motor is running? The most common cause is a broken torsion spring. Springs support the door's weight. When one snaps, the opener motor cannot lift the door no matter how hard it tries. Do not attempt to replace springs yourself. This requires specialized equipment and training.
How do I clean the garage door sensors? Use a soft, dry cloth to wipe the lens of both photo eye sensors at the bottom of the door frame. Remove any dirt, dust, or cobwebs. Make sure both sensors have a clear line of sight to each other. If cleaning doesn't fix the problem, the sensors may need realignment or replacement.
What does it cost to repair a garage door that won't open? Cost varies widely. A sensor fix runs $100 to $300. A spring replacement can cost $200 to $500 or more depending on the spring type. An opener replacement is $300 to $600 plus labor. Call for a free estimate before committing to any repair.
Can I use my garage door if it's stuck? No. Do not force it. Forcing a stuck door can damage the opener, tracks, and panels. It's also a security risk if the door won't close. Treat a stuck door as an urgent repair.
How often should I have my garage door inspected? At least once per year. Seasonal maintenance catches small issues before they become big repairs. Springs, rollers, and tracks wear over time. Regular inspection extends the life of your door and keeps your family safe.
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