Since the lack of power supply is a common problem check the wires around the sensor when the led lights are not flashing.
No power at fotocell garage door.
If you have an automatic garage door then you have to disconnect the door sensors.
Look for obstructions adjust the sensors to get a solid green light.
Once the power comes back on you must reconnect the garage door opener in order to take full.
During a power outage the garage door must be manually opened and closed in order to get in and out of this area of your home.
Disconnect the power to the garage door.
You will still be able to use the doors by manually opening or closing it.
How to fix a garage door s photo eye.
Also how to manually close and disconnect.
Sweep the garage floors and look through the sidings to ensure that there are no objects to obstruct the door.
1 the transformer has failed due to a power surge.
It s important that there s no power running to your garage door motor or you may electrocute yourself when disconnecting the door sensors.
Flip the circuit that controls the power to the garage door or disconnect the garage door plug from the wall.
2 the glass fuse on the circuit board has blown or popped.
Here is what may cause your garage door opener to not power on.