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as this was an older kit I did upgrade the firmware and did not soldered the key writing wire until after, maybe I used the wrong file? I know there is one specific to the old kits right?

Could firmware also cause this issue?

Where is that located? Got a picture?

I ran it but unfortunately the contrast pot went bad on me and I could no longer see the LCD. I did order both replacements for the contrast pot and 20 pieces of the buffer chips. I had another one I did for a friend that was fixed by swapping buffers. This one looks way worse so I think it's...

Yes Verified the jumpers on both the V6 Asia and V7 USA setup and both were correct as for the original set of instructions, I also re-flashed the firmware just in case but despite all that the behavior was the same on both occasions. I also reverted both board sets to stock form with a...

Friend sent me an old kit he had bought but never got around installing cause most of the pins had taken damage in shipping. I replaced all the damaged pins and installed the board on a Asia board set with a version 6 B board. I tested it an noticed no matter what game I flashed the graphics...

Pin 1 is vertical and pin 2 is horizontal.

hook me up with 1

I did that and cleared the backup ram too same result, I feel like maybe one of the 74LS245Ps is out.

Yep

Some pictures.

Got a 4 slot from a friend that was not working, I patched a trace under the battery and got it to boot. Only issue is I get sound out of only slot 1 and 3 but not slot 2 and 4. I already cleaned the slots and inspected the board for for broken traces and found none aside the one under the battery.

Thank you.

anyone got the manual for version 3.2? curious what sw1 does on that. is it a jamma/mvs selector?

Before you got swapping onboard ram chips look a the ppu pins. Make sure none are bent shorting or loose.

you changed both caps? 22uf and the 2.2uf?

I see one here. https://rb.gy/435d7i My other question would be is if the guy ever swapped the transistors I swapped on that sync module board? Mind you I swapped mines but have yet to test it.

did the sync issue go away? can the hv issue be an issue with the flyback? did the flyback ever get replaced?

Ever got the chassis back from the staten island guy?