Six-digit and four-digit display voltages

The six-digit score displays run on +60 V DC, a 5 V AC filament and a +8 V DC offset. The four-digit status display runs on +42 V DC, a 3 V AC filament and a +5 V DC offset. Measuring these at the display connector is the first step for any dark display.

The display supply carries 60 V DC (and 42 V DC); keep fingers off the power supply and display boards while the game is on.