Just a note, Andre v2.0 is the shiz for exercising driver boards. Been spending a bit of time with it. Once you get through the initial test and hit the MPU diagnostic button the test;
Toggles blanking at about once every 2 secs.
Walks through all solenoids in pairs, didn't write the actual but its something like 1 and 5, 2 and 6, 3 and 7, ect,,,
Toggles all lamp row/column select while walking an 'off' lamp through, 1x1 off, 2x2 off, 3x3 off, etc,,,
I'm using the Han's Siegcraft™ adapters to view all solenoid activity and the display led array to watch the lamps march.
I use one of the solenoid adapters to verify the driver board is 'alive' but placing it on the MPU top right connector first, then power off and move it back on the solenoids once I know the driver board is passing initial PIA tests as it's not needed there anymore and it saves me 1 sol display adapter.
When on the MPU 1J7 the output of the initial power up diagnostics look like this..
I'll be finishing up a board tomorrow night and can take some vids of what the exerciser looks like in action with Siegecraft adapters.
Then I am going to bulletproof my Hyperball driver board... Mega lamp matrix.... 16x TIP42's and 27ohm 3watt resistor pairs. That should reduce some backbox heat.