RE: Eliminator Sound Problem

> Hi all,
>
> Last night I struggle with a bizzarre sound board problem:
>
> Symptom: Upon start up, no "bang" (Eliminator usually starts
> up with an explosion). About 5 seconds later there is a slight "pop".
About 10
> seconds later, the audio begins to crackle, and it eventually
> becomes the thrust sound. With the thrust sound running in the
> background, the game plays fine, and the rest of the sounds are present.
However,
> when a ship explodes, the audio cuts out completely. About a good 20
> seconds later, the audio begins to crackle, and becomes the thrust sound
and
> again, all other sounds work like usual. In test mode, same thing: thrust
runs in the
> background. As soon as the test for "Small Explosion" triggers, all audio
> cuts out, and about 20 seconds later, the audio begins to crackle, and
> returns to thrust being the background noise.

Fix: Replace CA3080 at U6

It finally came to me that the White Background Noise (WBN) and Explosion 3
(which I found out maps to "Small Explosion") both feed into this chip.
Replacing it fixed the problem.

Like anyone but me cares...

BTW, I'm considering making up a few Sega G-80 "Extender card harnesses".
They would plug into the card cage like a normal board, but then have an
extended harness coming from it so you could lay down, probe, and flip over
the board you were working on. Just trying to gauge interest, so send
e-mail to ME (not the group) if you are interested.

-- 
Mark Jenison
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