After working fine for many years, my garage door opener is having sporadic problems. Replacing it is going to be costly and problematic, so I want to take a shot at repairing it instead. Here are the symptoms:
1) The door will occasionally open or close on its own. 2) The hard-wired wall switch is occasionally unresponsive; pushing the button has no effect. 3) The remote control seems to work consistently; there's been no problem with the remote.From these symptoms, I suspected the wiring on the wall switch. (I tried the easy and obvious step of changing codes on the remote in case there was neighborhood interference, but this made no difference.) I replaced both the wire and the switch itself, but the symptoms continued. I then disconnected the wire for the switch completely, and operated the door by remote only for several days. Unfortunately, we still had the problem where the door would sporadically raise or lower on its own.
I'm now thinking there's an electrical problem with the switch connections within the motor casing itself. I unbolted the unit from the ceiling, lowered it onto a ladder, and removed the cover for inspection, but I didn't find any obvious problems. Of course, I wouldn't know what to look for. :)
Does it sound like I'm on the right track? How can I isolate what the problem might be? Thanks!