Difference Between a Y-Unit and T-Unit Mortal Kombat PCB
Arcade: New Midway T & U-Unit Audio PCBs | RetroRGB
Mortal Kombat 4 Arcade Pcb Game Rare for Sale in Durham, NC - OfferUp
07630: mkyawdim, mkyawdim2, mkyawdim3, mkyawdim4: In Mortal Kombat Yawdim clones, the sky is not BLACK and the works poorly compared to the PCB in Theory must be BLACK!!! - MAME Testers