I didn't have much time to work on it today, but I did discover one of the wires I used for repairing was attached to the wrong point. I moved it to the correct place and although the screen did initialize (changed from white to black), it didn't display properly. I still need to check that the connections are proper and that there aren't any other shorts in my soldering job. If that checks out, I can try running the init script for the display, but I don't suspect that will do anything. It could be a similar issue as well on another wire.