Hi , I have three JPM machines , Impact 94 - 96 , Red Alert , Pinball Wizard and Impulse . All boards and game cards seem o.k and swapped for some spares I had which are untested but all I get is some red diode lights on reels and on power pack and some lights on board but nothing else . I wouldn't mind if I had an error code or partial boot up but nothing , any ideas , would much appreciate any leads ?