How to Repair a Garage Door Opener
Garage door won't open all the way? Garage door won't open with a remote? Or if your garage door's not working? With a little troubleshooting you can usually avoid a costly service call and get your garage door opener working again in no time.
Check Your Door First
Play it Safe
Symptom: The Remote Works But the Wall Switch Doesn't
Symptom: The Wall Switch Works But the Remote Doesn't Work
Symptom: The Door Goes Up, But it Only Goes Down When You Hold Down the Wall Switch
Fix: Align or replace the safety sensor
If the door goes up but goes down only when you hold down the wall switch, check to see that the safety sensors are in alignment. The small light on each sensor should be lit up when nothing is between them. Door sensors do go bad, so if no light is showing at all, you may need to replace them. You can save yourself some time by using the existing wires. Also, direct sunlight shining on sensor eyes can make them misbehave.
Symptom: You Have Power to the Outlet, But There's No Sound or No Lights When You Push the Wall Switch and Remotes
Symptom: Everything Works Fine Except the Lights
Fix: Replace the light socket
If the bulbs are OK but don't light up, you probably have a bad light socket. To replace the socket, you'll need to remove the circuit board to get at it. Use the same steps as in 'Replace the Circuit Board' (above) to accomplish this.
Once the circuit board is removed, pop out the old socket by depressing the clip that holds it in place. Remove the two wire connections and install the new socket. Replacement sockets cost less than $15.
Be sure to use a bulb of the correct wattage. Using lightbulbs with a higher wattage than the socket is rated for will cause a socket to fail. Not only is this bad for the socket, but it can also be a fire hazard. If your light cover has turned yellow from heat, you're probably using too strong a bulb.
Symptom: The Trolley Carriage Moves But Garage Door Doesn't Open
Symptom: The Opener Makes a Grinding Noise But the Door Doesn't Move
Garage Door Doesn't Open: Lube the Rail
Garage Door Won't Open All the Way: Check the Chain Tension
Garage Door Won't Close: Adjust the Travel of the Door
Check out how to weatherstrip a garage door in the video below to button up your garage.