Backlit Keyboard Asus ROG G752VW Not Working (Not ATK Package)

Hi everybody,

I am new to this forum and hope you may help me with my problem. I am currently owning an Asus ROG g752vw since nearly 3 years and, recently, my laptop is not backlit anymore. It used to work perfectly and one day just stopped to do so.

Just for your information, I have opened my laptop multiple times to clean it, check on a fan issue and fix a display issue (the display kept jumping when I was typing, showing flashes of light lines appearing and disappearing), although it never caused any problem to the keyboard.

I have done multiple research on how to fix the problem, and I am well aware of the ATK package. Yet after trying to install the 0.39, 0.40, 0.5 and finally 0.6 version, it nevers solved the problem. Thus, it made me wonder if I hadn't a broken stub (as explained by another user on this forum). By the way, one day it suddenly worked again for a few minutes while I was playing a game, and then stopped once more.

Do you have any ideas of what I could do, besides sending it back to Asus support (not under warranty anymore) ? Do you know how I could check if the stub is the problem or if it is a software problem ?

I don't really know what to add to this post to help you have a better understanding of the situation as I don't know what would be useful, but I will try anything you propose.

Thanks all. :)