I got the deadworld mod kit from pinbits and when I put the rom in my machine it does absolutely nothing. Since there were zero instructions on how to install it I found that I needed to replace the U6 game PROM chip that is on the WPC CPU board assembly. I took the old one out and put in the new one and my machine went dead. I took it out and put the old one back in and it worked just fine. I am sure the chip is installed correctly when I am putting it in. Not sure if there is something I am doing wrong or if I am putting it in the wrong spot or not. Any help would be greatly appreciated.
Thanks!