Hi all,
picked up a Neogeo MVS MV-1C from ebay with the intention of 'consolising' it but it's not going too smoothly at the minute and it has some snags with the colour. Apologies for the wonky pictures I really need to invest in a tripod!
First up the button cell had been cut off and the fuse holder was a bit mangled (had been shorted on the underside)
This suspicious looking chip had been fitted to the board although I have no idea what its purpose was
I removed the bodged on chip so the board was in a standard configuration and I wired up a 8 Din connector so I could use my retrogamingcables RGB scart lead from my AES, I took the RGB and sync signals from the jamma connector.
So while it works the colours are messed up with a wide band of green across the screen, like so
if I use the sync regeneration function on my g-scart lite it changes to this
On a side note not sure if this is the scart lead or the TV but on both my AES and this MVS the image is slightly shifted to the left and at somewhat of an angle (although it seems more obvious on the MVS).
AES
MV-1C
So i'm waiting on a programmer to program my own diagnostic bios but was just wondering in the meantime is there anything else I can be looking at? I see palette ram mentioned a lot with regards to colour problems on the AES but i've found very little info on the MV-1C especially any kind of circuit diagrams specific to this board.
Any pointers from neogeo veterans would be appreciated!
