Replace the opener sensors following the manufacturer.
Garage door opener sensor no light.
If you do not see a solid illumination or your garage door is not working the problem is most likely due to the sensors being out of line.
If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly.
Check the mechanism s source and sensor leds.
Inspect each sensor to make sure the green or red power indicator lights are.
If they re turned on in both the sensors then there is no issue with the power supply.
If your garage door opener craftsman liftmaster chamberlain genie sommer decko has no power but it is plugged in the circuit breaker is on and you know for sure the electrical outlet has power then there is something in the garage door opener that is faulty.
There is an electrical issue in the opener.
Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.
If one or both of the lights are off check the fuses breakers and plugs for problems.
Unplug your garage door opener from the power source to prevent accidental electrocution.
A common cause of a malfunctioning garage door sensor is lack of power supply.
Look for small led lights on the sensors.
Light doesn t activate on garage door opener when you cross safety sensor beam chamberlain group products which include the liftmaster chamberlain sears craftsman line of garage door openers have a feature where the opener light will turn on if you cross the safety sensor beam shooting across the opening of your garage door.
If your door control has a lock button it may have been turned on.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
Press the lock button to turn this feature off.
The light will flash two times.
When the lock button is on the garage door opener will work from the door control but the remote controls are locked out.
For people who do not know the transmitter has the yellow light and the receiving sensor has the green light.