There are multiple reasons they can stop working.
Garage door remote not working when light is on.
When your garage door opener is not responding to any command from the remote or the door control you need to check if the opener has electricity.
Check the power supply.
If we leave the car go into the garage and turn off the opener light from the wall mounted remote the key fob then works.
If you tried operating the garage door opener from both the remote control and the door control and the opener did not activate.
A simple way to do this is to unplug the garage door opener and then plug in another device say your phone or a light bulb to see if it lights up.
It s not uncommon for remote lenses to gather dirt over time so be sure to clean this area every now and then to ensure the signal can travel properly.
When the light is on ie after opening the door we are unable to close it using the fob.
Here are the troubleshooting steps.
If the light is off the key fob works.
Try using your remote to open or close your door to determine if the reprogramming was successful.
This is another simple problem to solve.
The most common cause of garage door remote control failure are weak or dead batteries.
The circuit board on your garage door opener will have to be replaced if you want your light to function properly.
So get a ladder and place it under the opener.
My garage door fob will not work when the garage door opener light is on.
To be sure that the batteries are always good use name brand quality batteries instead of discount brands.
The clicking noise you are looking for is the sound that comes from the relay on the circuit board.
If the garage door opener is not powered up it won t work.
The eye on your remote is what transmits the signal to your garage door opener.
If you do not hear a click coming from the motor housing then the relay on the circuit board is bad.
Garage door openers are great to have when they are working properly.
The easiest and first step i suggest is trying to sync your remote again.
The first thing you want to check is the socket your craftsman opener is connected to.
How to program chamberlain s universal remote control model klik3u to a garage door opener 9 17 2019 this video demonstrates how to program chamberlain s universal remote control model klik3u to a garage door opener with a yellow green red orange or purple learn button.