I will check all those things out, but why does the power driver board work fine in TAF (or did up until i put it in Getaway), then showed the same behaviour as the power driver board that was originally in Getaway - hence my thinking its the transformer/wiring/earth as they are about the only other option. Plus i'm confused that the CPU stayed booted at 2.4V! - I also checked the 12V and it is stable...