I was removing capacitors from a printed circuit board, The last capacitor was impossible to remove no matter how long I kept the soldering iron on it. I finally got it out but one of the solder points still had the metal leg in it from the capacitor , I tried everything to get it out without any luck, I finally drilled the solder point with the smallest drill bit I had to open the hole. I found a metal sleeve on the shank of my drill bit that had come out of the hole I had drilled. Have I just destroyed this circuit board or can it be repaired ? Thanks