Join the club! It looks like the - end of C9 lifted off? Chances are that's connected to ground inside the board, which makes it easy. First, see if you can run a short thin wire from the hole in the board where the pad connects to the capacitor terminal. That's pretty easy. Alternately, measure from the hole to the negative end of C10 or another nearby cap. If both minuses go to ground, there's your alternate connection. To make the most original looking repair, follow Unknown's instructions and glue the pad back.