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that looks like a bad A and B board connection. Try pressing the boards together while the game is one and see if they go away
 
Just adding a little update here. After plugging/unplugging the A & B boards from each other several times the board started working without any glitchy bars in the background sprites. Once it was confirmed working I installed my Darksoft multi kit board on the USA CP2 board that was originally Xmen vs Street Fighter and had the same issues with the connection between A & B boards. Several connect/disconnects later everything started working. That was yesterday.

Following that, today I thought I should retest my other CPS2 board that I thought I had fried (the reason why I bought the xmen vs street fighter board in the first place). I did several connect/disconnects and it started playing fine but with bars in the background sprites. At this point, I'll get some cleaner to clean the pins connecting A & B boards so that I can give it another go, but I feel confident my Astro didn't fry any boards it it was just the connection between A & B boards all along.
 
I've ran a CPS2 board at 5.5V+ for a brief while, because the voltage adjustment pot on the Hantarex PSU I had connected it to works in reverse (so turning counter clockwise the voltage actually goes up).
I love to read about those "clever" design. X/
Always makes me think of how IT guys often come with the least logical approach for the end user. :D

Off topic, sorry.
 
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