Chosen Solution
The J key stopped working on my MacBook pro as it did many times in the past. I initially set the MacBook on its side and sprayed the keyboard with compressed air. No dice. I took off the keycap by inserting a bit of plastic at the top and being careful not to break it. I once again set the MacBook on its side and started spraying air. I probably got a bit too eager with it, because this little bit of what looks like a black sticker came flying off. I picked up the sticker and haphazardly put it back where it was. The key still skips a few beats, but it works better than before. However I’d like to understand whether I should be worried about this broken bit. The J key with the (black) broken sticker at the top Comparison with a “healthy” G key (compare the left and right corners of the sticker) What is this thing? Is it critical to the function of the keyboard?
I ran i ti the same issue and with the help if these glue dots right from target and an exacto knife has done the job!! Scotch Create adhesive dots clear ultra thin (permanent) had a picture of a porcelain fox with polka dots on the front
