Get Garage Door Not Opening But Motor Running Pictures. The first problem could be with the motor itself. The opener motor is fine but the shaft doesn't turn.
It is best to troubleshoot the issue to determine the appropriate solution. Otherwise you would hear the chain moving. When the cord is pulled, the motor is disengaged from the chain.
When the cord is pulled, the motor is disengaged from the chain.
It is possible that the motorhead gear has a broken locking mechanism. When the cord is pulled, the motor is disengaged from the chain. It is best to troubleshoot the issue to determine the appropriate solution. The chain is probably derailed at the motor end.