So I actually started soldering for the first time and effectively repaired a burnt edge-connector! However, the game has no sound which has left me wondering if a nearby pin had gotten damaged from the burn. Wanted to hear some other perspectives on the subject. I tried cleaning the other pins with alcohol 91% proof but still no change.
Needless details:
Sanded and washed with alcohol, soldered a strip of copper in place, used two-part epoxy resin underneath and clamped down until cured, resoldered, and inserted. #VeryProud
Thanks to Arcade Jason for being an incredible example!
P.S. The PCB was sold to me with a burnt connector. I simply just wanted to make the best of the situation.