After a cooking-with-the-recipe-too-close accident, oil got into the keyboard circuit and - as i didn’t open and clean straight up - it got worst and worst until i couldn’t even write my password when turning on my MBP.
At this time I tried deep cleaning the keyboard from inside with alcohol and everything but it was too late, I could only type ”’[»Ûå»ÁØÁÁ» kind of characters as if i was constantly pressing alt+MAJ… (and also the battery was to be replaced)
Anyway, I made the big work: Took me a good day to take everything apart, clean an old machine of mines and replace several pieces. But here we are! 3rd revival of my mid-2012 13” MBP from 2015 ! (previously changed hard drive, logic board, RAM bars, cables…). You can say i’m very proud for avoiding such a money spending, gaining in skills, and keeping the belief fixing is better than discard!
Though, because of the tutorials crossing, some steps are double and in a different order, might be confusing.