Quoted from Phat_Jay:So I picked up a spare system 6 mpu board from a blackout, with the thought of burning a rom for alien poker and using it as a backup. The board arrived safely and appears complete and intact. A couple small filter caps are jumpers but nothing horrendous. My question is what is the best way of testing this. Should I just plug her in and cross my fingers, or is there a better way? Is there any risk to my other boards in doing so? My ap is working perfectly and don’t want to screw it up. Thanks guys!
I have written some test ROMs from scratch that can be run in the machine - I know your concerned with not messing up your good machine. However, these Test ROMs are designed to start small (01-LEDs checks only that the CPU chip and a few other parts on the board respond). The further you go with the tests, the more of the board (and the machine) are utilized.
My point being, you could start with the first ROM and work your way to the final ROM (13-sounds). The allows you to essentially ease the board into your good machine while testing it at the same time. The other advantage is that you wouldn't have to set up a test bench, and if the board is suspect, your finger is always on the power switch.
You can download all the ROMs in a single zip from here: http://pincoder.reversion.ca
There is also a thread on this site where you can leave some feedback: https://pinside.com/pinball/forum/topic/new-williams-system-6-in-game-test-roms
If you decide to try them, let me know what you think of them
Craig