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frosken
April 20, 2006, 8:44pm Report to Moderator

OOPS!!!
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As you already know, I recently found a nice Fire with a few issues... most of them are now fixed (big tank+tank to MrMikeman!), but this one is way above my (mostlikely lack of) knowledge...

I'm having sound issues... the music runs, some sound effects can be heard,
but I have absolutely no speech and I know I'm missing other sounds

What I've done which didn't not fix the problem:

- Changed sound ROMs
- Switched sound CPU with game CPU
- Checked that power supply voltages are there (yes...got the -12)
- Pressed the Sound diagnostic switch (SW1) on the CPU board...I get a
chwirping (sp?) sound every 2 seconds...non stop

What did I miss???

Thanks for your help!

Frosken




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AMX
April 20, 2006, 9:01pm Report to Moderator

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Arrete de niaiser avec ça pis vend moi la game!!!

Non mais serieusement, ship tes boards a Bruno pis y en a pus de probleme!!! Vite fait et bien fait!


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Monkeybug
April 20, 2006, 9:09pm Report to Moderator

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Broken trace?  Open transitor, bad resistor?  I'm having a similar issue on my Cyclone right now so I decided to get a copy of Leon's test roms and help troubleshoot any bad chips on the CPU board.  Since Fire is a Sys11A game, I assume a good part of the sound is still on the CPU?

You can find the details at Marvin3m or: http://home.scarlet.be/~fb054529/will11/ewill11.htm

I havent actually tested anything yet.. I need to get a logic probe.

Some else suggested a short circuit near the batteries but I havent checked into that.
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Centallica
April 20, 2006, 9:21pm Report to Moderator

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I had a similar problem on a System 9 Sorcerer and it was the D/A convertor chip (digital to analog convertor).

Brian


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mindstorm88
April 21, 2006, 7:41am Report to Moderator

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Could be anything in the sound section!!!! , Worst case would be the rare 55536 speech chip !!!! But don't worry i know who has some !!!!


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frosken
April 21, 2006, 10:52am Report to Moderator

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Thanks for the tips... I wanted to know if I missed anything 'obvious'...

I got a reply on RGP, which I'll check out this weekend...

***
I just fixed one for someone with this problem - it was a trace that
went under a chip socket with hidden corrosion.  Trace out the
connections from the sound pias to make sure you don't have the same
problem.

Some speech comes from the cpu board and some from the sound board.
Are any of the sounds you do get in game incorrect sounds?  Sure sign
of the pia being the problem (either the PIA itself or the traces)
***




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