Hi all. I'm going to do my best to describe my problem, but I am relatively new to this, so please bear with me.
I built a cabinet from scratch, with the sole intent of making a dedicated Super Mario Bros. machine. At first, I used a 19-in-one JAMMA board, paired with a CGA-to-VGA converter, and had all the other games disabled so it booted directly into SMB. This worked, but the game was emulated in this board and I didn't like the performance. I wanted the real deal. So I bought a tested good Vs. Unisystem Super Mario Bros. board, and I bought a Vs. to JAMMA converter board from pcbjunkie.net. These are still running into the above mentioned CGA-to-VGA converter into a 19" LCD screen.
I am having troubles with the video on this setup. It's just a garbled mess. The system board, the Vs. to JAMMA board, and the video converter board all have their own respective RGB trim pots on them. I spent all day yesterday trying various combinations of tweaking these. I was able to get the display to show, but not clearly, and there is a noticeable green overtone to everything and the video seems to intermittently cut out. if it matters, the settings for the pots that so far show the display the clearest are: CGA-VGA converter: RP1:all the way left, RP2 & RP3: 1bout 1/3 up; JAMMA converter: all 3 all the way to the right; Nintendo Vs. board: all about middle (but these 3 don't have a pronounced effect at all.)
I am attaching a pic of the screen as best I can get it, showing the graphical glitches.
Does anyone have any advice on what I can do to get this up and running correctly? Greatly appreciate any and all advice!
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Topic: Having video troubles with Nintendo Vs. board & JAMMA (Read 2474 times)
