I am looking for a little help. My fire power will boot and briefly display 1492 2 in player one with 0 on all other displays. Quickly only player one and credit/ball display remain on. Player one will blink out some gibberish, credit shows 4 and ball in play will count 1 to 40 and keep looping through this count. The machine has been working good for awhile now with the exception of column 8 lights stuck on. I just replaced the pre driver with mpsa14 transistor. I played 2-3 games with no issue. Column 8 lights were working. I shut the back box put the glass on and this crazy behavior started. Today I have changed the one remaining scanbe which was the cpu, other scanbe sockets were changed a couple months back. I swapped in new 5101 and new eproms. no change. Game boots normal, both LEDs blink on and go out. On board williams diagnositc and both led blink 2 times and go out. I took out the eproms and put in leons test prom. LEDs blink. I used my logic probe on all PIAs and they all check normal, pulsing input and output. I have 5 volts on blanking circuit on both mpu and driver board. 40 way board interconnect on female side previously replaced and reflowed male pins. What else could be going on?