Capcom Hyperdyne sidearms pcb - No sound

[Shinydaz]

I've had this one for a while, it's just missing the sound.
After checking the z80, eprom and ram in the sound section, I moved onto the ym2203 sound chips located at 1D and 3D
These proved signals that go to the ym3014 sound chips at 1c, 3c.

After a while I noticed the clock was missing at pin 39 of the ym2203 @ 1d, this provides the clock to pin 5 of the ym3014 at 1c.  After swapping out the ym2203 it's now fully working.

Shinydaz2018-01-03 17:32:13

 

[karlcdoe]

Nice. I don't suppose you have a lonk to the schematics for this pcb? I've just remmebered I have one to fix and a quick google produced a lot of schematics but for something more deadly than a pcb

 

[Shinydaz]

http://arcarc.xmission.com/PDF_Arcade_Manuals_and_Schematics/

 

[karlcdoe]

thanks... bit of an obvious place to overlook really.