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
Current 'working' lineup: ( 2 ) Flipper Football, The Shadow
Gone but not forgotten: ( 22 ) City Slicker, Dirty Harry, CFTBL, Big Shot, Big Guns, Black Rose, Judge Dredd, Indianapolis 500, Big Game, BS: Dracula x 2, Beat the Clock, Fire!, F-14 Tomcat, Getaway, Breakshot, Cheetah, Meteor, El Dorado, Nitro Ground Shaker, Chexx Hockey, Slugfest
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?
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) ***
Current 'working' lineup: ( 2 ) Flipper Football, The Shadow
Gone but not forgotten: ( 22 ) City Slicker, Dirty Harry, CFTBL, Big Shot, Big Guns, Black Rose, Judge Dredd, Indianapolis 500, Big Game, BS: Dracula x 2, Beat the Clock, Fire!, F-14 Tomcat, Getaway, Breakshot, Cheetah, Meteor, El Dorado, Nitro Ground Shaker, Chexx Hockey, Slugfest