What's actually broken, and whether you can fix it yourself

A garage door that won't open, closes partway, or makes grinding noises usually has one of five problems: a broken spring, a misaligned sensor, a bent track, a worn roller, or a dead remote battery. You can fix the battery and sensor issues yourself in under an hour. Spring and track problems require a professional — a broken spring can snap suddenly and cause serious injury, and a bent track needs specialized tools to straighten safely. A worn roller or hinge might be something you handle if you have basic mechanical confidence, but the door's weight and tension make it risky.

Before you call anyone, spend ten minutes checking the straightforward things. Look at the remote batteries first. Then walk to the garage and look at the two photo-eye sensors mounted on each side of the door frame, about six inches up from the ground. If one is dirty, dusty, or knocked out of alignment, wipe it clean or gently adjust it so both sensors point directly at each other. If the door still won't close after that, you have a spring, track, or roller problem that needs professional repair.

Key Takeaways

  • Dead batteries in your remote and dirty or misaligned photo-eye sensors cause most garage door problems and can be fixed without a technician.
  • Broken springs and bent tracks are dangerous to repair yourself and require a professional with the right tools and insurance.
  • A garage door repair call typically costs between $150 and $300 for a service visit, plus the cost of parts if something needs replacement.
  • Spring replacement usually runs $200 to $400 per spring, and most doors have two springs that often fail around the same time.
  • A professional repair usually takes one to two hours, and you should get a written estimate before work begins.

How to check and clean the photo-eye sensors

The two photo-eye sensors sit on opposite sides of the garage door frame, roughly six inches above the ground. One sends an invisible beam across to the other. If that beam is blocked or misaligned, the door will not close — this is a safety feature to prevent the door from crushing a person or object in its path.

Start by looking at both sensors. If either one is covered in dust, spider webs, or dirt, use a soft, dry cloth to wipe it clean. Do not use water or spray cleaner, which can damage the lens. After cleaning, press the door close button on your remote. If the door closes, you are done.

If the door still will not close after cleaning, check the alignment. Stand to the side and look at both sensors. They should point directly at each other across the opening. If one is tilted or knocked sideways, gently loosen the mounting bracket (usually a single bolt or clip) and rotate the sensor until it points straight across at the other one. Tighten the bracket and test the door again.

When to call a professional and what to expect

Call a garage door repair company if the door still will not close after you have checked the batteries and sensors, or if you hear a loud bang or snap when the door moves. That sound usually means a spring has broken. Do not try to operate the door after hearing that noise — a broken spring changes how the door moves and can cause it to fall suddenly.

When you call, tell the company what you have already checked. Ask for a phone estimate before they come out, though many companies charge $50 to $100 for a service visit that gets applied to the repair cost if you move forward. A technician will arrive with tools and replacement parts, diagnose the problem in 15 to 30 minutes, and give you a written estimate for the repair. Most jobs take one to two hours.

Common repair costs: a single spring replacement runs $200 to $400 depending on the spring type and your region. A sensor replacement is $100 to $200. A bent track usually costs $150 to $300 to straighten or replace. Roller and hinge replacement runs $75 to $150 per part. If the door opener motor itself has failed, replacement is typically $300 to $500. Ask the technician whether both springs should be replaced at the same time — if one has broken, the other is usually near the end of its life and will fail soon after.

Tracks, rollers, and hinges: what you might handle yourself

If a roller is visibly worn or cracked, or if a hinge is bent, you can replace it if you are comfortable working with hand tools and understand that the door is heavy and under tension. You will need a socket wrench set, a replacement roller or hinge kit (available at home improvement stores for $20 to $50), and ideally a helper to hold the door steady while you work.

Before you start, unplug the garage door opener from the wall outlet. This prevents the door from moving unexpectedly while you are working. Prop the door open with a sturdy wooden block or a C-clamp on the track to hold it in place. Remove the bolt holding the old roller or hinge, slide it out, and slide the new one in. Tighten the bolt firmly but do not over-tighten, which can crack the new part.

Do not attempt to straighten a bent track yourself. A track that is even slightly out of alignment will cause the door to bind or derail, and straightening it requires a specialized track-bending tool and knowledge of how much force to explore. A bent track is a job for a professional.

How garage door springs work and why they fail

A garage door spring is a tightly coiled metal rod under extreme tension. It counterbalances the weight of the door so the opener motor does not have to lift the full weight by itself. Over time — usually 7 to 12 years depending on how often the door opens and closes — the metal fatigues and the spring snaps. When it does, you hear a loud bang or crack, and the door becomes very heavy and difficult or impossible to open.

Most residential garage doors have two springs, one on each side of the door frame, mounted horizontally above the door opening. They are under so much tension that a broken spring can snap suddenly and cause serious injury. Never try to replace a spring yourself, even if you have watched a video. A professional has the right tools to safely release the tension, remove the old spring, and install a new one.

If one spring breaks, ask the technician whether both should be replaced. Springs are rated for a certain number of open-close cycles, and if one has reached the end of its life, the other is usually close behind. Replacing both at once costs more upfront but saves you from a second service call a few months later.

Remote, keypad, and wall button troubleshooting

If the door does not respond to your remote but the wall button works, the remote batteries are dead. Replace them with fresh alkaline batteries of the correct size — check the battery compartment on the back of the remote to see what type you need. If the door still does not respond after new batteries, the remote transmitter may have failed, and you will need a replacement remote from the door opener manufacturer or a universal garage door remote from a hardware store ($20 to $50).

If neither the remote nor the wall button works, the problem is likely the door opener itself — either the motor has failed, the power cord is unplugged, or a circuit breaker has tripped. Check that the opener is plugged in and that the outlet has power by plugging in a lamp or phone charger. If the outlet is dead, reset the circuit breaker in your home's electrical panel. If the outlet has power but the opener still does not respond, the motor has likely failed and needs professional replacement.

A keypad mounted on the wall outside the garage works the same way as a remote. If it does not open the door, check that the batteries inside are fresh. If you have forgotten the code, most keypads have a reset button on the back that you can press to restore the factory code, then reprogram it with a new code of your choice. Check the keypad manual or the manufacturer's website for the exact steps.

Maintenance to prevent future problems

Garage door maintenance is straightforward and takes about 30 minutes twice a year. In spring and fall, do the following: unplug the opener, manually open and close the door by hand to feel for any grinding, binding, or unusual resistance. Listen for squeaking or grinding noises. Wipe the photo-eye sensors clean with a soft cloth. Inspect the springs, rollers, and hinges for visible damage or rust. Lubricate the rollers, hinges, and track with a silicone-based garage door lubricant spray (not WD-40, which attracts dust). Do not lubricate the springs themselves.

Test the door's safety features by placing a wooden block on the ground in the door's path and pressing the close button. The door should reverse when ready when it touches the block. If it does not, the safety sensors or the opener's force-sensing feature may need adjustment, and you should call a professional.

Frequently Asked Questions

Can I open my garage door manually if the opener is broken?

Yes. Unplug the opener from the wall outlet, then pull the red emergency release cord that hangs from the opener motor. This disconnects the door from the opener so you can lift it by hand. The door will be heavy, but it should move smoothly if the springs and rollers are in good condition. Do not try this if you hear a loud bang or snap, which indicates a broken spring.

How much does a garage door repair cost on average?

A service call costs $50 to $100. Parts and labor for a repair typically run $150 to $400 depending on what is broken. Spring replacement is usually the most expensive repair at $200 to $400 per spring. Sensor, roller, and hinge repairs are usually $100 to $200 each. Get a written estimate before work begins.

What should I do if the door closes and then when ready opens again?

This usually means the photo-eye sensors are misaligned or dirty. Clean both sensors with a soft cloth and check that they point directly at each other. If the door still opens after closing, one sensor may be broken and need replacement, or the opener's force-sensing feature may need adjustment by a professional.

Is it safe to repair a garage door myself?

You can safely replace batteries, clean sensors, and replace worn rollers or hinges if you are comfortable with hand tools. Do not attempt to repair or replace springs, straighten tracks, or work on the opener motor itself. Springs are under extreme tension and can cause serious injury if they snap during repair.

How long do garage door springs last?

Most springs last 7 to 12 years depending on how often the door opens and closes. A door that opens and closes 4 to 8 times per day will wear springs faster than a door used once or twice daily. When a spring breaks, you will hear a loud bang or crack, and the door will become very heavy or impossible to open.