"The piece that broke off fits into a well about 1/2" deep. No iron I have will reach it." 73, Dick, W1KSZ You can't even reach the end of the metal terminal and let the heat travel down to the solder joint? Or, fill the cavity with solder? How about installing a new terminal, such as a brass rod or threaded brass spacer, long enough to bring it out farther, etc.? Roy, K6XK