The first step of garage door opener repair involves identifying the problem and its cause. Most often, when there is a problem with the opener, it will simply not work at all. Most modern units have a safety shut-off mechanism, which is engaged when the parameters of the system change. The device can shut off when there is a problem with the major component of the door such as a broken spring or cable. In other cases, the issue can manifest itself with strange noises or improper movement of the door.
The solution to the problem can be as simple as resetting the operator's travel limits and force. If the screw or chain drive has got rusty and makes a lot of noise, rust removal and lubrication will resolve the issue. Broken moving gears are replaced. More serious problems include broken chain, capacitor, motor, or logic board. The provided repair typically involves the replacement of the damaged component with a new one.