If they re turned on in both the sensors then there is no issue with the power supply.
Garage door opener sensor no light.
If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly.
Inspect each sensor to make sure the green or red power indicator lights are.
If one or both of the lights are off check the fuses breakers and plugs for problems.
Check the mechanism s source and sensor leds.
When the lock button is on the garage door opener will work from the door control but the remote controls are locked out.
The garage door sensor yellow light and the green light together create a solid illumination.
Remove the old safety eyes noting how they connect to the back of the operator mounted on.
Unplug your garage door opener from the power source to prevent accidental electrocution.
The ceiling of the garage door.
Press the lock button to turn this feature off.
There is an electrical issue in the opener.
Look for small led lights on the sensors.
Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.
A common cause of a malfunctioning garage door sensor is lack of power supply.
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.
Replace the opener sensors following the manufacturer.
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 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.