I restored that game in 2006?12 years ago so there weren’t any Rottendog driver boards at that time but I do see in the picture that it looks like the CPU is not booting.
Try reseating the ribbon cables and other connections between the driver and CPU.
From what I can tell that small ribbon cable might be upside down if the red stripe isn’t on the bottom.
Edited that. Talking about the small ribbon that goes from the driver to the CPU. Also make sure none are a row off.