I recently got a kof 2003 cart I’m assuming has a failed neo cmc chip. I was wondering would my best bet to fix this be to source a game like kof 2001 and sac the chafio board off of it?
Just so you know theres 2 different CMC variants and they aren't compatible with each other.
I've never swapped one before but I've been succesful swapping the roms instead, reflowing the pins didn't fix my issue.
https://wiki.neogeodev.org/index.php?title=NEO-CMC
Hey Cyberwillis You Sir, are a true gentleman! Many thanks for your input, and apologies for the delay. I assumed I'd receive an email notification of replies, but didn't...Hi...
That resistor you see of 161OHMs is OK also all other 561OHMs if they still measure that value. If you can check any partial image on the screen your CMC50 is probably OK, and probably is just some lines between C ROM and CMC50 has a faulty connection. But in case everything is a mess on the screen then I would ask you to exchange the M1 Eprom because it is the center for "CMC50" decrypting all the Cx ROMs and S1.
*UPDATE* : In case you need a new M1, find one 271-m1c.bin with this hash (crc32: f5515629) don't try to put a PCB version on it because is different
b1dc25d0 271-c1c.bin
d5362437 271-c2c.bin
0a1fbeab 271-c3c.bin
87b19a0c 271-c4c.bin
704ea371 271-c5c.bin
20a1164c 271-c6c.bin
189aba7f 271-c7c.bin
20ec4fdc 271-c8c.bin
f5515629 271-m1c.bin
530ecc14 271-p1c.bin
fd568da9 271-p2c.bin
aec5b4a9 271-p3c.bin
ffa3f8c7 271-v1c.bin
5382c7d1 271-v2c.bin