Local garage door service from Cooper Family Garage Doors.
You hit the button and your garage door starts to close, then suddenly reverses back up. Or maybe it stops halfway down and refuses to budge, leaving your garage wide open to the street.
I see this problem almost daily here in Orange County and the Inland Empire. The good news? Most of the time, a garage door that won't close is something you can diagnose yourself — and sometimes even fix without calling us. Let me walk you through the seven most common causes we see, in order from most likely to least.
This is the number one reason your garage door won't close, hands down. Every garage door opener installed since 1993 has two safety sensors mounted about six inches off the ground, one on each side of the door opening. They shoot an invisible beam across the doorway. If anything breaks that beam, the door reverses to prevent crushing a person, pet, or your car.
Here's the problem: these sensors get bumped. A lot. Someone backs into one with a bike, or you clip it with the lawnmower, or it just shifts over time.
Look at both sensors. Most have a small LED light on them. If the lights are blinking or one is off completely, they're not aligned. The lights should be solid — usually green or amber depending on your opener brand.
Try this quick fix: gently push one sensor until both lights go solid. The sensors just need to "see" each other. If the door closes normally after that, you found your problem.
If the sensors won't stay aligned or the wiring looks chewed up or corroded, that's our territory. We carry replacement sensors on our trucks and can swap them out in about 20 minutes.
Sometimes the sensors are aligned perfectly fine — they just can't see through the crud. Dust, spider webs, water spots, and general garage grime build up on those little lenses faster than you'd think.
Grab a clean rag or your shirt sleeve and wipe both sensor lenses. You'd be surprised how often this solves the problem instantly. While you're down there, make sure nothing is sitting in front of the sensors — a box, a bag of fertilizer, even a leaf can block the beam.
Your garage door opener has limit switches that tell the motor when the door has traveled far enough. Think of them as the "stop here" settings. If the close-limit switch is set incorrectly, your opener thinks the door has hit the ground when it's actually still six inches up, or it thinks there's an obstruction when there isn't.
Most openers have two adjustment dials on the back or side of the motor unit, usually labeled "up" and "down" or "open" and "close." They might also be marked with arrows. You can try turning the close-limit dial a quarter-turn and testing the door.
That said, limit switches can be finicky. If you're not comfortable climbing a ladder and experimenting, we can dial this in for you in one visit.
Garage door springs do the actual heavy lifting — your opener motor just moves the door along. If a spring breaks, the door suddenly weighs 150 to 300 pounds more than the opener can handle. The motor will struggle and often won't close the door fully, or it will refuse to move at all.
If you have torsion springs (the ones mounted on a bar above the closed door), you'll usually see a gap in the spring or it will look separated. Extension springs (the ones along the side tracks) will hang limp. You might also have heard a loud bang when it broke — people often mistake it for a car crash.
Do not try to close the door manually if you have a broken spring. It's dangerous. And definitely don't try to replace springs yourself unless you have professional training. We've seen serious injuries from DIY spring replacement. This is a same-day or next-day fix for us, and typical spring replacement runs $200 to $350 depending on the spring type and door size.
The metal tracks guide your door up and down. If a track is bent, dented, or has something stuck in it, the door can't travel smoothly. You'll often hear grinding or scraping sounds, or the door will stop at the same spot every time.
Here's your DIY check:
You can clear out debris yourself, but bent tracks usually need to be replaced. A bent track means the door took a hard hit at some point, and it's tough to bend them back correctly without the right tools.
Garage door openers have a circuit board that controls everything. Lightning strikes, power surges, and old age can all fry that board. Sometimes the problem is simpler — a tripped breaker, unplugged opener, or a blown GFI outlet.
Check the basics first. Make sure the opener is plugged in and the outlet is working. Check your electrical panel for a tripped breaker. If you have a GFI outlet in the garage, press the reset button.
If the opener has power but still won't respond at all, or if it's acting erratically (closing randomly, ignoring commands), the logic board might be toast. Replacement boards run anywhere from $80 to $250 depending on the brand and model, plus labor.
This is the least common cause, but it happens. Sometimes the opener loses its programming and stops recognizing your remote or wall button. Or you might be pressing a remote with dead batteries.
Try using the wall button instead of the remote. If the wall button works but the remote doesn't, pop in a fresh battery. Still nothing? You may need to reprogram the remote to the opener. Check your owner's manual — it's usually a simple process of holding down the "learn" button on the opener and then pressing the remote button.
If none of your controls work — not the remote, not the wall button, not even the keypad — circle back to cause #6 and check your power.
Look, we're all for saving money on simple fixes. If you can wipe off a sensor or pop in a new battery, go for it. But garage doors are under serious tension, and garage door openers are hardwired into your electrical system. If anything involves the springs, the cables, the tracks, or the electrical components, you're better off calling us.
We've been serving families throughout Orange County and the Inland Empire for years, and we've seen what happens when a weekend project goes wrong. We're happy to come out, diagnose the real issue, and get your door closing properly again — usually the same day you call. Reach us at (909) 766-9426 and we'll take care of it.
