Well Ive started a process of ilimination so far Ive: check all the ribbon connections and got both screens working but no card recognised, then i tried a spare untested logic board I had still did exactly the same but only the bottom screen worked and the top just lit up (that might of just been dues to a ribbon connection losening when i changed the boards over). So Id say its not a logic board prob. Could it be the main large ribbon?
theres also some odd faint ticking sound. Good news is I got it to load a game last night i just have to get it all working together now lol