Thanks to both of you who have replied so far.
I did swap the board to my other system one game and let it go through it's start up procedure a couple of times. It tested the 'GAME OVER' relay as it should but not the 'TILT" relay-same problem right from the start as in other machine so did not change game type and go any further.
I am waiting for Pascal to get back to me again-in the meantime am just curious to see if other boards have been shipped with the same problem ie a bad batch or am I just the lucky one off.
