Key points. Does the reset relay trip on bottom board. Does score motor turn. Does player unit in head advance any. Does score motor run continuously. In the startup state a series of functions (well documented on web) happen. Then finally the bank resets on the bottom board that returns the reset relay to the off position. Under that short bank there is a switch that is opened and closed by the reset relay that you must flip bank over by loosening wing nuts. When I run into any machine that wont start, I adjust the startup relays first (also importantly the switch under bank)