My 5 year old ggenie garage door opener started misbehaving in the past month or so. It will open by itself. Once it's open, I can't close it with the remote, or the wall button. I have removed the batteries in the remote controls in my cars and outside. I have even disconnected the wall control. But as long as the power if plugged in, it will open by itself.
It doesn't happen immediately. If I leave it plugged in, with a few hours it will open.
Any suggestion other than replacing the main unit?