This version of TnF pcb is pretty uncommon. It is unencrypted, no customs on this board, and no known schematics are available from what I have read.
Got it up and running, changed out battery for a large 2450 coin cell and could play it.
Game was playable but background was jacked up. Not static, it was moving almost like bad sync in background only.
Poked around 6116 ram, which led me to believe one may be bad, removed and tested both out of circuit, both passed. Socketed and reinstalled.
Moved down to 273 that runs to those two ram. Failed out of circuit. Replaced. Repaired.
Hope this helps someone else in the future.