Very simple repair, the one terminal on the terminal block has melted the block, you need to lift the terminal back up, I use a 1/8" head of a pop rivet, remove the nail part of the pop river by pushing it back through, now you just have the rivet, take a small awl or punch and gently make the hole between the terminal and the block open so you can push the rivet into the space, bend the contacts out on the cord winder , then reassemble it, remember to be careful with any of the gray plastic on the cordwinder or the block, it is 40 years old and it is starting to get brittle. Good Luck.