Try these steps to fix the issue.
Garage door opener light does not turn on.
To determine which one it is follow the steps below.
Step 5 lights still on.
Put the screws back in and plug the opener back in.
First disconnect the garage door opener from all power.
Reset the light timer to the lowest setting 90 seconds instead of 4 minutes.
If they re turned on in both the sensors then there is no issue with the power supply.
More specifically if your garage door light won t shut off it is most likely due to one of these reasons.
Sensor power reconnect the sensor to its power supply.
A common cause of a malfunctioning garage door sensor is lack of power supply.
After 90 seconds reconnect the power and see if the lights come on.
Light bulb needs to be replaced in garage door opener.
Doing so will reset it but don t abuse this tip.
Garage door lights sometimes malfunction.
Unplug the garage door opener then immediately plug the opener back into the electrical outlet.
If your liftmaster garage door light won t turn off or on there is likely a problem with your door s motion sensor or light timer.
To install the new bulb just screw it in.
Cfl light bulb base is too wide for opener light socket.
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.
If you find that your lights aren t turning off unplug and replug the opener.
Listen for the light.
If you hear a click replace the light socket if you do not hear a click replace the logic board.
There is an electrical issue in the opener.
Disconnect the unit power.
Disconnect the wiring from the opener.
Plug the opener back in.
Another common cause of light bulb failure i have found is that the brass tab in the bottom of the light bulb socket has been bent down too far and is not making contact and completing the electric circuit.
In this situation the only option is to replace the logic board or the entire garage door opener.
Look for small led lights on the sensors.
If the light is still not coming on it could be the light socket or the logic board.
If your garage door opener light is not working the fix might.
Then reconnect the opener.
Brass contacts in opener light socket are.
This is an easy fix but caution must be used.
If it s the light socket or logic board.