Did you check your wiring on your Video Blue or Green? The burn seems to center around Pin 13. When I set fire to a Ms Pac board, you could actually trace the popped RAM chips back to the test wire which was dangling in the cab. At some point while it was one, the wire hit an uninsulated end of a hot AC wire. I pulled everything off of the board and tossed it in the trash.
Is there any burn on your WWF board? post a pic of that burn. I rarely say this, but that KI2 looks it needs to get sent to the great arcade in the sky. Even if you could replace those idiotically small resistors, you'd have a hell of a time fixing any traces, unless like the other pins, that trace just moves vertically through those resistors. Maybe its worth a shot. I hate to see stuff like that get thrown out, and I'm sure you'd hate to see that too. I doubt a local op would even touch it.
Needless to say, don't plug anything else in!