Customer called because the door was stuck open, and they weren’t able to close the door with the garage door opener or even by hand. The issue was diagnosed as a broken cable that would cause the door to go crooked every time it attempted to close which the opener sensed and reversed itself. The cable rusted out bottom fixtures had to be replaced because of rust and the rollers had to be replaced because the door went crooked severely. Once all work was performed the door had operated like it was brand new. Flawlessly and quietly.