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Answer #3 : On newer openers check to make sure that the optical safety-beams are working properly. First make sure
that the indicator light located on your safety-beams are solid and not blinking. If the light is blinking make sure that the lenses are clean and that there are no
obstructions blocking the path of the infrared beam traveling from lense to lense. If those solutions are not helpful make sure that the lenses are aligned properly by
grabbing the safety-beam and gently twisting the bracket back into realignment until the light stops blinking. If that does not work make sure that there are no staples digging into the wire causing a short.
Also check for pinched wires that run from the opener to the safety-beams.To make sure that the safety-beams are the problem you can just HOLD the wall button and the door should close.
If the door closes by ( holding ) the wall button but doesn't close by pressing and depressing it quickly, " suspect the optical safety-beams. "
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