I just obtained a Super Fighter II mini famiclone which is, as its name suggests, a small NoAC clone. Main board reads UM6561B. Overall it works (the power board quality is quite dubious, some solder point rusted and detached from the board, so I rewired them).
There's two issues, the video is very noisy (especially on the capture card) and it is having some serious problems with the triangle channel.
SMB2j, Gimmick and some multicart
Micro Machines title On this one the problem is really apparent. There's also some very odd noises which come up with Gimmick notably (but also some other games not using expansion audio).
What could be the cause? (Also, could this be converted to NTSC?)
There's two issues, the video is very noisy (especially on the capture card) and it is having some serious problems with the triangle channel.
SMB2j, Gimmick and some multicart
Micro Machines title On this one the problem is really apparent. There's also some very odd noises which come up with Gimmick notably (but also some other games not using expansion audio).
What could be the cause? (Also, could this be converted to NTSC?)