Hello! I got my NeoSD today, and I'm having issues getting it to work.
I'm getting graphical artifacts that make it look like an Atari 2600 on an 80" TV.
I've tried several different NeoGeo sets, rebuilt them a few times, and even tried one set that was supposedly prebuilt for the NeoSD.
I'm using the original Neo Geo power supply and my console serial number is under 100,000 (if that matters).
Oh! And yes, it does this with all games, and also on the system screen (the Neo Geo flip sprite doesn't show).