Hello My friends outside GFI outlet would not reset. I test the wires coming in. They were fine and had voltage coming thru conduit connected to a 15a breaker inside the house. I replaced the metal box and both outlets with all plugs and a new cover and weather seal! There was a missing plug on the left side and the bottom screws were rusted solid! The bottom screw heads holding the outlets in the metal box snapped right off! Looks like the green ground screw on both outlets are severely rusted! Could rain water getting in from that missing plug hole destroy both outlets in this quadplex? The box was on a open wood deck about 3 feet off the ground. See pics below. Click to enlarge.