During a recent flood the charger for my laptop broke. It is the standard charger that came with the laptop (an Asus) but I'm not sure of the exact model. The charger comes in two parts, one that plugs into the wall with a big box that I assume is some sort of power supply and a second that plugs into the laptop and into said box. The plug on the box is covered in corrosion. I've tried cleaning it off with isopropyl alcohol but it still doesn't work. The laptop works but I can't charge it. Is there a way to fix it or buy a new one?