Re: Sega Universal Sound Boards

-----Original Message-----
From: "Mark Jenison" <jenison@enteract.com>
To: <vectorlist@synthcom.com>
Date: Tue, 13 May 2003 21:59:18 -0400
Subject: VECTOR: Sega Universal Sound Boards

>
> Hi all,
>
> I've been struggling with debugging 16 Universal sound boards. A good
> number of them mostly work except for the explosions, which create a "bong"
> noise instead of the appropriate explosion in Star Trek. In Tac/Scan, this
> problem effects the thrust noise, which creates a "rrrrr" sound. Apparently
> the problem is related to a white noise generation on the board, but the
> chip that produces the white noise appears to be fine, so it must be getting
> screwed up somewhere else on the board. I'd appreciate any debug tips for
> this problem that anyone can offer.
>
> Does anyone else here have any experience working on these boards? I'd be
> interested in trading repair tips or logs.
>
> I'd also be interested in working a deal where I could get a few working
> ones back in exchange for the rest (or maybe for some other boards).
>
> Last but not least, can someone recommend a chip search engine? Google
> seems to not be very helpful when searching for chips. In specific, I'm
> looking for MP7524 (schematics say AD7524, so that'd probably work as well,
> or any cheap cross that would work).
>
> Thanks.
>

try this:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1594/ln/en
(found with google)

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Received on Tue May 13 21:10:15 2003