Also be aware that if you position a new CA hinge were the old had been the wood has already soaked up the old CA and it will be a weaker bond. You can inprove this bond immensley by drilling fron the underside (not through the upper covering if you're careful) and pegging the hinge with pieces of toothpick CA'd in place.

If I need to replace CA hinges I usually install a pinned plastic hinge in their place and epoxy it in.

Problem with CA hinges is, like Lay's potato chips, you can't do just one.