2026-08-21 7 min read
A customer called last Tuesday morning. Her door wouldn't open. The opener hummed. Nothing moved. Before we sent a technician, we walked her through three quick checks over the phone. Turns out her photo eye was blocked by a cardboard box. Fifteen minutes later, the door worked fine, and she saved the cost of a service call. This happens more often than you'd think in Columbia, and that's why knowing how to troubleshoot matters.
When your garage door won't open, the cause usually falls into one of five categories. The remote batteries are dead. The photo eye sensors are misaligned or dirty. The door is stuck because of ice, debris, or binding tracks. The opener motor is broken. Or the springs have failed. Let's walk through how to check each one, so you know whether this is a DIY fix or a job for a professional. See our guide on garage door openers in columbia: which type actually fits your home.
Before you assume the worst, try the basics. Replace the batteries in your remote. Use fresh alkaline batteries, not the ones that have been sitting in a drawer for two years. If a second remote works and the first doesn't, you've confirmed it's the battery. If no remote works, move to the next step.
Check whether the wall-mounted button inside your garage works. Press it firmly and hold it for a full two seconds. If the door opens with the button but not the remote, your remote batteries or receiver are the issue. If the wall button also doesn't work, the problem is likely the opener itself or a safety sensor.
Most modern garage doors have photo eye sensors near the base on both sides of the opening. These infrared sensors tell the opener to reverse the door if something blocks the path. A blocked, dirty, or misaligned photo eye will prevent the door from closing, and many openers won't open if the sensors aren't communicating correctly.
Look at both sensors. You should see a small red or green light. If one side is dark, something's blocking it. Clean the lens gently with a soft cloth. Make sure nothing is in the way: boxes, cobwebs, or trash. If both lights are on but the door still won't open, check that the sensor cables haven't been damaged. A chewed wire or loose connection can cause the same symptom.
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Walk into your garage and look at the metal tracks on both sides of the door. Are they bent, rusted, or obviously out of alignment? A bent track doesn't always stop the door completely, but it causes binding and resistance. If you see something obviously wrong, don't try to straighten it yourself. Garage door tracks are under enormous tension.
The torsion springs above the door carry 90 percent of the door's weight. If a spring has snapped or gone slack, the opener motor can't lift the door, even if everything else works. A broken spring won't always look obviously broken. Look for a gap or separation in the coiled metal. If you suspect a broken spring, stop trying to open the door. A failed spring is a safety issue and requires professional replacement. Springs last 7 to 9 years with normal use, depending on cycle count.
If the photo eyes are clear, batteries are fresh, and the wall button still doesn't work, the opener motor itself may be broken. Listen carefully when you press the button. Does the motor hum but the door doesn't move? If yes, the motor is running but can't turn the drive mechanism. This usually points to a stripped gear inside the opener or a stuck door that's being held by a broken component.
If there's no sound at all, no hum and no click, the opener may not be getting power. Check that it's plugged in. Look for a tripped circuit breaker or blown outlet. If the outlet has power but the opener still has no sound, the motor itself has likely failed.
Our guide to garage door openers in Columbia covers the most common opener problems and when replacement makes sense. It's worth a read if you're weighing repair against replacement cost.
If you've checked the batteries, photo eyes, tracks, and spring, and the door still won't open, it's time to call someone who knows what they're doing. Garage door repair involves heavy springs and mechanical parts that can cause serious injury if handled wrong.
Garage Door Columbia handles stuck doors, broken openers, and spring failures across the Columbia area with same-day service. We'll give you an honest estimate over the phone and let you know what the actual cost will be before we start work. No surprises. Get in touch to schedule a free quote today.
Don't keep guessing. A quick call saves time and frustration. We're here when your door isn't.
Why does my garage door opener hum but the door won't move? The motor is running but something is preventing motion. This is usually a broken drive gear, a stuck door caused by binding tracks, or a failed torsion spring. Stop attempting to force it open. This typically requires a professional to diagnose safely.
How do I know if my garage door spring is broken? A broken spring looks like a visible gap or separation in the coiled metal above the door. The door will feel extremely heavy and the opener won't be able to lift it. Never attempt to replace a spring yourself; springs are under thousands of pounds of tension.
Can a dirty photo eye really stop my garage door from opening? Yes. A blocked or misaligned photo eye prevents the door from functioning as a safety measure. Simply cleaning the lens or removing debris in front of it often solves the problem in seconds.
What does a garage door cost to repair versus replace? Repair costs range from 150 dollars for remote batteries to 500 dollars for spring replacement. Full opener replacement runs 400 to 800 dollars. We provide detailed estimates before work begins.
Can I fix a stuck garage door myself? Small fixes like cleaning photo eyes or checking tracks are safe. Never attempt to repair springs, adjust cables, or force open a bound door. These tasks require specialized knowledge and tools.