If they re turned on in both the sensors then there is no issue with the power supply.
Sensor issues with garage door.
This is something that can also come handy when your car is in the driveway.
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.
The garage door sensor yellow light and the green light together create a solid illumination.
A common cause of a malfunctioning garage door sensor is lack of power supply.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
Another very common issue is that your garage door sensors may be blocked by something in the garage itself.
Cycle the garage door through the opening and closing actions using the control on the garage wall.
Neither less to say it can actually prevent the door from fall on any person or object.
Remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag.
The while idea behind garage door sensors is to be able to block the garage door.
Many people use their garage to store things whether it s the lawnmower or boxes of items you re keeping for sentimental reasons.
Removing the obstruction from the sensor beam.