Any way to fix charging port short?

Driving down the road, pick up my phone to use it and boom nothing. Won't turn on, won't charge. My battery life has always been awful, so I figure it finally died for good. I take it into the Apple store for a second opinion, Genius points at charging port and shows that covering two of the terminals is evidence of a spark. She said there's no way to fix it. Is the entire logic board shorted out or just the charging port? Could I take it to a shop and have the charger replaced? I've swapped several digitizers and I understand the basics of the phone, but I'm incapable of soldering or anything of that sort.