I just moved in to a new home and the garage door goes up and down by itself. It's happened 3 times it the last few months. It a Craftsman, and I have no papers on it. It almost seems as if it is conected to someones TV remote. When it happens it goes up and down so ofter it doesn't even get to the top before it's going down again and vice versa. The batteries have been changed, and we are now at a loss as to how to stop this from happening. Please help!