Loosen the small nuts that hold each sensor to the l brackets with a small adjustable wrench.
One garage door sensor not working.
Now that you have made sure there are no obstructions and that both sensors are aligned properly.
If the door doesn t open when you re standing close to the motor unit follow the troubleshooting tips in our garage door opener remotes won t work video to help you fix the problem.
If the sensors are working the garage door should immediately stop closing and return to the open position.
Adjust each sensor in small.
Cycle the garage door.
If the garage door opener lights blink 10 times when you re trying to close the garage door then the safety sensors may need adjustment or the sensor wiring may.
Even if there are no evident signs of dust on.
Remove the wires from the wire nuts or cut the sensor wires 12 from the sensors.
Replacing your old sensors.
Troubleshooting check if there are any objects impeding the door.
Strip both ends of wires from each sensor and twist like colored wires together.
Since the lack of power supply is a common problem check the wires around the sensor when the led lights are not.
Liftmaster suggests them be placed no higher than 6.
Loosen the nuts just.
If you still haven t identified the problem or if you want to test the sensor wires themselves remove the sensors from the brackets.
Follow these easy steps there isn t a solid light coming from the safety eye sensors.