Hi all. I recently picked up a Bloxeed PCB (Sega System C2) and I haven't been able to get the sound working. I've fiddled with the volume pot without any luck, and cleaned the JAMMA edge. I'm using a HAS 3.1 supergun and haven't run into this problem before. I tried Googling but wasn't able to find anything. Any idea if I'm missing something, or does it sound like the audio is busted?