Troubleshooting Cinematronics Sound Cards

I have a bunch of Star Castle sound cards that I'd like to get working
right. I'm using a Kurz Kasch test fixture to do it. Basically, it
supplies +/- 25v and +5v to the sound card and also has a ribbon connector
which goes to J2. With the test fixture you can push certain buttons to
produce certain sounds like fire, thrust, etc. I guess it just inverts
whatever signals turn on or off the various sounds.

I have an 8 ohm speaker hooked to the board, but what I can't figure out
is - I can't get any sound to come out. I do hear a hum, and I verified
that the speaker is connected to the right pins. The J2 ribbon connector
seems to be on right.

Has any one ever used the Kurz Kasch test fixture (309AC) to fix
Cinematroncs sound cards?

thanks...

Matt

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             Orange County . Los Angeles . San Diego
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Received on Tue Nov 30 13:22:14 1999