Why won't my garage door close?

Common reasons include: misaligned safety sensors, obstructions in the door path, broken springs, stripped gears in the opener, or issues with the close limit settings. Check the safety sensors first - they should both have steady lights.

Should I repair or replace my garage door?

Consider replacing if: the door is over 15-20 years old, has significant rust or structural damage, panels are severely damaged, or you want to upgrade to an insulated door. Many issues like springs, cables, sensors, and openers are cost-effective to repair.

What do the blinking lights on my garage door opener mean?

Blinking lights indicate error codes. For LiftMaster/Chamberlain: 1 blink = sensor wire issue, 2 blinks = sensor wire short, 3 blinks = door control wire issue, 4 blinks = sensor misalignment, 5 blinks = motor issue. Use our error code lookup tool for specific diagnosis.

How do I calculate what torsion spring I need?

To calculate the correct torsion spring, you need: door height, door width, door weight, track type, and number of springs. The formula involves IPPT (Inch-Pounds Per Turn) = d^4 × E / (10.8 × D × Na). Use our spring calculator for accurate results.

Can I replace a garage door spring myself?

Torsion spring replacement is dangerous and recommended only for trained professionals due to the extreme tension (over 200 lbs of force). Extension springs are safer for DIY but still require proper safety precautions and tools.

Garage Door Opener Not Responding

Some Experience Needed15-60 minutes

When your garage door opener shows no signs of life—no lights, no sounds, no response to any controls—it's typically an electrical issue. Check the power outlet, circuit breaker, and the opener's internal fuse. A power surge may have damaged the fuse or circuit board.

Common Symptoms

No lights on the opener unit
No sound when pressing wall button or remote
No response to any controls
Opener was working but suddenly stopped

Possible Causes

•Tripped circuit breaker
•Unplugged power cord
•Dead outlet
•Blown internal fuse
•Failed circuit board
•Power surge damage

How to Fix It

Check power at the outlet

Plug a lamp or phone charger into the same outlet to verify it has power. If nothing works, check your circuit breaker.

Inspect the power cord

Ensure the opener's power cord is fully plugged in and not damaged. Look for frayed wires or burn marks.

Reset the circuit breaker

Find your electrical panel and locate the garage circuit. Flip it fully OFF, then back ON. Some breakers look 'on' but are tripped.

Unplug and wait 60 seconds

Unplug the opener from the outlet, wait a full minute, then plug it back in. This resets the internal circuit board.

Check for blown fuse

Many openers have a small glass or blade fuse inside the unit. Consult your manual, locate the fuse, and check if the filament is broken.

Replace the fuse if blown

Purchase a replacement fuse with the same amperage rating. Install and test the opener.

When to Call a Professional

•Circuit board appears burned or damaged
•Fuse keeps blowing repeatedly
•You smell burning from the opener
•Electrical work makes you uncomfortable

Frequently Asked Questions

Why did my opener suddenly stop working?

The most common cause is a power surge that blew the internal fuse. Thunderstorms, power outages, and utility issues can cause surges. Check your breaker and the opener's fuse.

Is it worth repairing or should I replace the opener?

If it's just a blown fuse, definitely repair. If the circuit board is fried, compare the cost of a replacement board to a new opener. Openers over 15 years old are usually worth replacing.

Can I install a surge protector for my opener?

Yes, and you should. A surge protector strip rated for large appliances can protect your opener from power surges. It's cheap insurance.