Garage Doors Are Kind To Your Visual Environment
Garage doors need springs to work. Without a spring to lift the weight of the garage door, it would be impossible to open. There are two types of spring used in garage door design. Torsion springs and extension springs. Torsion springs are found along the top of your garage door when it is shut. Extension springs run along the tracks on either side of your door when it is open.
Your garage door is so heavy that if you don't have some assistance in the form of a spring to help you or your opener, you won't be able to get your door open. A real pain when your car is stuck in your garage.
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While the normal homeowner should by no means attempt to replace an torsion spring with no specific training, extension springs are possible to replace. Replacement springs can generally be found in big box stores.
There are a number of items about your garage door that you can trouble shoot and fix youself. If you have a garage door opener then you also have some sort of interrupter device that may stop your door from closing if something is in the way. More often than not they are stop/reverse lights.
At the base of the tracks on either side of your garage door opening, you will most likely see a set of stop/reverse lights. These lights are in reality a transmitter plus a receiver of infrared beams. If the beam is interrupted your door will stop going down, reverse and go all the way back up. More often than not your garage door light will flash when this happens.
Every so often your garage door eyes will stop and reverse your door when there is no apparent reason. One reason might be that your stop/reverse units have been bumped and are no longer pointing at each other. If you guess that is the problem, use the set screws or wing nuts to correct the lights, not a hammer.
The main reason for this beam to be interrupted is that there is something blocking it. Look for and get rid of the item that's shutting out the beam and also you're most likely good to go.
If you have looked high and low for the thing blocking your garage door to the point that you have become frustrated, it may be that nothing is blocking it. Sometimes a speck of dust, an insect or condensation has gotten on the lenses of your stop/reverse lights. Wipe the lenses with a dry cloth and see if that works.
Your garage door opener unit can fail. They're normally very dependable but they do have components in them that may fail. Usually the failure of the opener is brought about either by a worn gear sprocket or the logic board.
While a homeowner armed with an adventurous spirit and a certain amount of mechincal talent can replace a logic board and a gear sprocket, perhaps the easiest course of action is to simply phone a garage door professional and have the problem taken care of.
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One of the good things concerning garage doors is that they are extremely reliable. Most homeowners go years and years without a trouble. That means that when a problem does develop, it is often a new experience for a home owner. With any luck your repair will be easy and the cost affordable. Good luck!