I have a Lift-Master 1000SD garage door opener that has worked well for 20 years. Just recently we have been unable to close the door with any of the remotes after leaving in the morning. Even holding the remote right next to the antenna had no effect.
After doing some troubleshooting, I discovered the issue has to do with power being sent to the light sockets. It is independent of the light bulbs themselves. I unscrewed the light bulbs and the issue persisted. As soon as I turn off the light from the wall controller, the remotes work flawlessly 100% of the time. Any ideas what the issue could be or the fix?