Does your door opener do this? The motor runs but nothing moves,the gears are stripped.The number one cause of this is the door being in disrepair! Lack of maintenance on the door brings a range of problems.Your opener is designed as a “convenience” and not to “muscle” the door up and down.Don’t fret we can repair your opener and make sure your door is operating correctly! This is not limited to Chamberlain openers and we can fix them all!!