Go to the next fix, if that doesn’t work out. Now, check if the keyboard lights are showing up or not. Once you have done that, plug in the keyboard to another port (try the ports at the back of the cabinet.) 3. Brush of all the dust from the keys on your keyboard, 2. Tomorrow I will try again to de-plug and re-plug the backlight flex + try another one as well to see if its stabilizing. At first, disconnect the keyboard from the port it is using. Note: I have restored the OS to the factory settings as well, started from scratch. Not the biggest issue but would be nice to have this thing working back again. Let me know if you guys have seen this problem before, any help will be greatly appreciated. Every thing has been replugged on the motherboard. Macbook has never been water damage and is fully functional. If I go above those 3 bars, the keyboard backlight stop working again and I cant make it work by lowering the power again under the 3 bars I was talking about. I have manage to make it work recently by closing the lid and when I open it back up, I can make the backlight work for the first 3 bars of adjustment on the screen with the F keys. My F5 and F6 keys are working well because I can see I am changing the backlight illumination on my screen. Then nothing happens, tried SMC and PRAM Reset, went into the system preferences, When I boot my macbook, the backlight lights up but for about 2 seconds then shuts off right away.
My macbook pro retina 15'' is having a keyboard backlight issue.
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