Most garage door openers use a 2032 button battery, although some do use different sizes. If you’ve recently changed the batteries but they still aren’t working, test them with a battery tester. If the battery sat on the shelf for a long time before you bought it, it might have been dead when it got to you.
If you’d like, you can feed the new antenna over your garage door so it goes outside. This will boost your signal even more, but it’s fine to leave it inside the door if you don’t want to see the wire. [5] X Research source You can use any wire you happen to have lying around, including stereo, ethernet, or telephone wire. [6] X Research source
If the remote sat for a long time with old batteries, the circuits are likely corroded. In that case, the remote probably needs to be replaced even if it’s less than 10 years old. [8] X Research source
It’s better to use a random pattern for the switches, rather than putting them all in a straight row—that will make it less likely for someone to be able to copy your RF signal and open your garage door. If your transmitter works on a frequency but it doesn’t have switches, you can install an external receiver near the garage door opener that will convert the frequency for you.
If you don’t want to replace your lightbulbs, it may help to install a ferrite clip around the power cord on the box that controls your garage door opener. Simply clamp the clip around the power cord and snap it into place to help block out RF interference. You can order these cores online or purchase them from an electronic store.
For instance, if you have a cable running along the back of your garage that’s causing interference, re-installing your garage door opener box toward the front of your garage may help. Unfortunately, it can be hard to pinpoint what’s exactly causing the problem—it could be something like a nearby airport or radio tower, for instance. [12] X Research source
If the button is on the box that controls your garage door opener, it will be near the base of the antenna. Depending on your model, you may hear a click on the garage door, or you might see flashing lights on the remote that indicate the programming worked. When you’re finished, press the button again to make sure the garage door opens.
