I have this issue that seems to slowly get worse with time. If I'm playing a game of pinball on TAF, the sound will sometime just fade away, then go mute for some time, it will normally return on the next ball or when I reboot the machine. The sound board has new header pins installed, and new ribbon cables (I say new, but they are about 3 years old). I took the board out and looked, no damage, I cleaned the contacts, and put it back in, same issue.
Anything I should try? The ribbon cables still feel firm when I attach them to the board, seems like the connectors are still tight.