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Well, I found the issue, which I still can't believe. I programmed a GAL16V8A to replace the PAL, which programmed fine and verified but gave me the white screen of death. I pulled another GAL from my stash and programmed it and it worked. I took a closer look and the working one was a GAL16V8D...

I'm in

No easy way, you have to compare each pin with a Known good one.

Sure

Is there any info on what chips on a CPS B Board handle what aspects of the game. Other than Sound, Game, and Graphics. i.e. This 245 handles background graphics. I have a working AVP game that has individual pixels in the background that lineup in vertical lines.

Ok solved the background issue. Went from 27C322 roms down to 27C160 roms and the background came back. Same ROM files & I reset the Jumpers to the 27C160. Don't get why.

cool then let me get: DL-1927 - x2 DL-2027 - x2 DL-1525 - x2

Ill take the 5 you have please

Yes, The main CPU for the Program half of the 2 board set for a CPS2, not the power board.

how many do you have and how much?

these can be used on B boards correct?

still have any dl-1525?

Another fun one I've never seen. V4 board. Jumpers correct ROMs Confirmed No Background Graphics

Interesting, there is no addressing to the Program ROMs

not playing blind, blank screen first, reboot then gets a white screen, VSAVU Romset. what really bothers me is that this same Romset works fine on the working board, but that good romset transferred to one of the other boards has the same issue. Its acting like a PCB issue, but three separate...

Jumpers all test correct

yes

requested from a customer

got a strange issue that is a head scratcher. I'm converting some boards to Vampire Savior & adding Infinikeys. I have 4 boards one worked fine the other three have the same issue. The issue is when booting the bad boards the first boot has a blank screen, when I turn off the power and turn it...