My garage door opener will not go down automatically untill i press the button in the garage and hold it down. Then if it doesnt close, it will flick the light on and off and beep 10 times. I think its the sensors. When i put my hand over the invisible laser on the green one, the light will blink on the sensor, but on the red sensor, it wont blink when i sway my hand to interfier with the laser. Please help. should i buy new lasers or how shoul i fix it
fist of all i don
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