Point Blank 2 sound issues Namco System 11

[Franco23444]

I got a Point Blank 2 pcb and it seems to be having some sound issues once in a while. The game plays and runs fine but after a certain amount of time ( around an hour) the sound locks up and it’s just a buzzing sound or a random game sound ( monkey or wah wah sound). The game still runs and plays. Not sure what the issue could be, maybe the sound chips? Probably burn some new ones?

 

[Franco23444]

Could this be an issue? I found some corrosion on some chips on the right side of the main board. And near the audio section.

 

[Franco23444]

Could the DAC have gone bad? Could replacing the caps fix this issue? Or could it be an issue with the sound cpu?