Great Post. Couple questions.
+18 volts DC (lamp matrix): TP8 (TP102 on WPC95). This is an unregulated voltage, so it can vary from 16 to 20 volts. If this is low, check bridge BR1 and capacitor C6/C7 (diodes D11-D14 and caps C11/C12 on WPC95).
1. When this is working properly. During gameplay should this voltage ever dip below 16V. If so is this a sign of bad cap?
2. How hot should the diodes get during gameplay?
My game is NBA Fastbreak.
Thanks