If just the red source led is out unplug the mechanism check the wiring and plug it back in.
Garage door one light red one green.
Since the lack of power supply is a common problem check the wires around the sensor when the led lights are not flashing.
I put a new battery in the remote too.
If one or both of the lights are off check the fuses breakers and plugs for problems.
One will have a green light used to show that the units are powered up and the other will have a red light to show that there s no obstruction between the sensors and that they re seeing each other.
Replaced the door sensors and alignment appears to be fine as both green red lights are constant.
One will have a green light that signifies power to the units and the other will have a red light that signifies that the sensors are seeing each other i e.
That there are no obstructions.
At that point a homeowner may want to try.
I moved the red one and the red light stopped blinking but the door still won t open.
How long have you been dealing with this.
I ll do all i can to help.
And when they re blinking they re flashing a warning to the homeowner that something needs to be corrected.
Did pull screw level to see if that was an issue re engaged lever not sure if did it up or down and still same problem.
Re align them by moving one of them until the red light stays lighted.
Genie garage door opener with the red green light for detecting something in way of door closing.
If the red light is blinking the sensors are not aligned.
Inspect each sensor to make sure the green or red power indicator lights are.
My genie garage door won t open.
Sweep the garage floors and look through the sidings to ensure that there are no objects to obstruct the door.
If getting debris away from the door makes no difference then there s more to the story.
Red sensor lights are an issue because they should generally be green.
These sensors are little black boxes found on either side of the bottom of the garage door.
If both the red source and green sensor lights are on and not blinking then the door mechanism is working properly.
Many times the malfunction can be due to a loose connection or broken wire.
Each sensor will usually have a light.