Garage doors require springs to operate. Without a spring to lift the weight of the garage door, it would be impossible to open. There are two kinds of spring used in garage door construction. Torsion springs and extension springs. Torsion springs are found along the top of your garage door when it is closed. Extension springs run along the tracks on either side of your door when it is open.

The malfunction of either one of the two springs on your garage door will most likely keep you from being able to open your garage door.

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While the typical homeowner should never attempt to replace an torsion spring with no specific training, extension springs are possible to replace. Replacement springs will ordinarily be found in big box stores.

There are some repairs you can make on your garage door. One of the features of a garage door opener is that it has stop reverse lights that can stop your garage door from closing if something is blocking its path.

At the foot of the tracks on either side of your garage door opening, you may most likely find a set of stop/reverse lights. These lights are really a transmitter and a receiver of infrared beams. If the beam is broken your door will stop going down, turn around and go all the way back up. Frequently your garage door light will flash when this happens.

On occasion your garage door eyes will stop and reverse your door when there's no apparent reason. One reason may be that your stop/reverse units have been bumped and are no longer pointing at each other. If you suspect that is the problem, make use of the set screws or wing nuts to adjust the lights, not a hammer.

If your garage door still refuses to go down and stay there, keep looking. Determination will pay. You will in time find something blocking your garage door's "eyes.

An additional reason for your garage door failure is that some dust or condensation has actually gotten on the lenses of the "eyes" and so they can not complete the circuit.

Another cause of an unpredictable garage door is that your opener's logic board or gear sprocket has malfunctioned.

If your opener is the difficulty you may be glad to know that you most likely do not have to replace it. Parts are obtainable to garage door technicians who will repair your opener at a fraction of the cost of a new opener.

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One of the nice things about garage doors is that they are extremely reliable. Most people go years and years without a trouble. That means that when a problem does develop, it is frequently a new experience for a homeowner. With any luck your repair will be easy and the price affordable. Good luck!