Thank you for your answer.I was tempted just because he offered me pang3 (A+B+C) with this issue, 2 not working A board (originals) and other 2 C-boards (reported to work) for around 100€ shipped.
But I think that I'll follow your advice
If you skip that, can you put me in contact with the seller?
Would be interested in this
I asked from some pics of the other things. In total
a 12mhz not working A board,
a 10mhz not working A board,
a 10mhz reported to work A board,
Pang3 b+c with line issue,
a working SF2 c board
and another working C board with all 3 headers (he doesn't remember from which game is).
If I'm not convinced I'll send you a pm with the seller's details
Wow, so this is what I was doing a year ago? Thanks internet. For what it's worth, I never solved whatever the actual issue was. I ended up keeping the A board (which was fine) and acquiring a new Final Fight B and C board.
The A boards are the big issue, lines through the game are often caused by a bad custom. Other times it's mask ROMs or C board
For some reason on Final Fight it seems to be more common for the C boards to die though. I would've thought the opposite since they're mounted upside down and protected a bit more, maybe that's why on later games they didn't mount them upside down?
Either way, lines through the game is never a good thing.