make sure to disconnect the display of it's 2 power leads to determine a start up and attract mode, sometimes if the display has a issue it will stop the machine going into a attract mode.

1. disconnect the power supply leads to display board and display and do a start up
2. try again with the leads plugged in
3. do step 3 but disconnect the ribbon cables from the display board and display

just try to determine if a weird issue and where it maybe