"Red, Yellow, and Blue Fret Buttons Stop Working"に関する回答I came up with an interesting solution today, after trying to resolve this problem for 3 years. All it takes is a gum wrapper and a toothpick. Simply twist the wrapper into a wire-like shape, and wrap it around the base of connecters inside the guitar. Use the toothpick to press it into place. Then insert the neck back in, you may now need extra pressure for it to latch. This technique snugged the neck into place, making the connections solid. Good Luck!!