Chosen Solution
So, I got this MacBook from a friend, as he didn’t have a use for it anymore, it was originally a 2010 model but it got a logic board replacement, idk if that affects it. there were some problems with the RAM at first but its fixed now. Anyway, I often do use the MacBook in low light and I normally can see the keyboard. So I use the backlight but to my surprise the thing doesn’t work! It shows up as working on the OS (10.12.6) but nothing happens, I have tried it on other os’s to see if it was a os problem but no luck. I have checked the board for water damage, none. Checked the connector in the board and the actual cable, both fine. there haven’t been any other problems with the MacBook otherwise I am just asking if it is a problem with the logic board or if its the backlight itself Hope to hear from someone who can help cheers ;)
Have you made sure you check the proper cable?
Review this guide Step 14 MacBook Pro 13" Unibody Mid 2010 Logic Board Replacement Is the cable damaged? I’ve seen a few torn or the latch missing.
