Have a Nuova Bell Cobra pinball from 1987 that does not work. It was designed for 220v, have that all handled so it's running with proper voltages at 120 volts. Also the power board in the backbox has the infamous "black box" voltage regulator replaced with an LM323. So that seems to be OK.
But the game won't fully boot. I get 6 LED mpu board flashes, but then it stops...
Does anyone know what the flash codes represent? i suspect it's Bally like... and yes there is coil voltage (if it's doing a Bally -35 check for coil voltage)... but i can't find any flash code information anywhere on the Web. Does anyone have this info?
Leon at one point was working on this, and a Test EPROM for the mpu board. But i can't find that info any where either.