I'm hoping I have just fundamentally misunderstood what I need for this to work, but I'm failing to get any video out of the Minigun hooked up to an MV-1C. Does the RGB SCART output
require something like the OSSC/Framemeister or the RetroTINK RGB2COMP in order to convert properly to consumer-level displays?
I was avoiding the OSSC for now because I didn't need that level of quality (or complexity of configuration), but maybe my total lack of exposure to SCART before this project means I've misunderstood what is needed to get a picture on a display. I have tried a cheap
SCART-to-composite adapter hooked to an old Sony consumer CRT without luck. I then tried plugging it in to a
SCART-to-HDMI video converter instead, but still no luck. When I boot it up, it just scrambles the on-screen display of the HDMI converter.
I put together a
short video of the setup totally failing to work, if there is something obvious I've missed.
For my setup, I've built my v1.7 Minigun. I have the Minigun connected to a totally unmodified MV-1C with a 161-in-1 cart. I connected a Happ power supply (outputs on the Molex pins all seem correct). I have an
NES RGB SCART cable that I'd seen others recommended for getting video output to SCART. From the SCART output, though, I'm not totally sure what I can get away with.
I wish I could just swap out the JAMMA board for a known-working one, but this is my first adventure into arcade boards. I only assembled the one Minigun, so I don't have another known-working supergun to swap in either. If nothing else, the v1.7 assembly was a lot of fun. I've done other surface-mount projects before, but for some reason this was just a blast to put together. I really hope I can get it all working happily, but I've still had fun learning.