Neo-Geo Forums

I'm not sure why but I don't have sound on my Street Fighter II: Hyperfighting for CPS. I'm looking for any information because I've found nothing anywhere else. I've tried to buy a replacement C-board from others and even eBay sellers but they won't part with them. The images are too large to post.

http://i.imgur.com/eAqVk23.jpg
http://i.imgur.com/SIG38vv.jpg