Sega Star Wars Trilogy (Model 3) Audio Output via Toslink no sound?

[LimeiBook86]

Hello everyone,

So I have a Star Wars Trilogy Sega Arcade machine (model 3). It works pretty well, I'm using a VGA converter to get video output, and another converter to go to the DVD recorder to make it simple to record the game. However I'm stuck with recording audio. The game board has a Toslink (optical audio) output. The red laser is coming out, so I know the connection is active. But when I plug it into my stereo, nothing comes out. I tried the stereo (and the same toslink cable) on my satellite box and the stereo works fine. So I'm wondering what's up?

I guess the Toslink connection could be disabled or not in use, but there is a red light coming out of it. There are two Toslink ports on the board, only one looked 'active' however.

I'm unsure if there are any settings in the Service menu, I looked. Maybe setting the cabinet to 'Deluxe' instead of upright will help? Also it's possible the audio signal it's spitting out is something odd the stereo does not understand.

If this fails I guess the only way to get audio is to split the connection to the speakers, which I want to avoid doing.

Thanks!
-Steven