First up... thank you Millsy!!! Thanks for your input mate.. much appreciated!!!
OK... game is now working. Had me going around in circles a bit as some of the mods done to the game led me to believe that the bottom board was from another game.
2 major faults... no PF lights and fuses tripping.
Game would be Ok with just the backbox lights on.. plug in PF and all goes tits up.
I ended up finding some ground wires that had come away from their tabs.. just slid right off. Very hard to see, but i just noticed 1 on the score motor.. fixed that, checked the rest of the connections and another just slid off.
Also found one on the logic relay bank under the PF.
Well ground is always a good thing to find when you have current ramping up, so i plug her in and the PF lights up like a Christmas tree.
Then she trips off again.
So i seperate the fuses and use the trip switch on both PF lamps and backbox, one by one. Pf lights up... backbox trips the switch.
Fault was always in the backbox... 3 lights work here and they must be sucking the juice as it burnt out a 20A fuse..... no PF lights was a different fault.
Anyway.. few alterations done in the back box too, so working on a hunch i disconnect the wire going to some newly and messily installed lamp sockets... hey presto!!! Game now works!!!
And what a cracker of a game COVER GIRL is.
Some minor tweeking and tuning to do, but essentally, a working game.
THE DEMON FAULT!!!
Repro PF... very very nice!
Game lit up...