mattosborn
Well-known member
Good info! Either the boards I had used different value caps, or more likely, some of them were just old and needed replacement.
Is it possible it affects more than the melody? Seemed like all the sound effects were off-pitch.
Richard
That particular cap is just for the melody chip. Sound effect frequency issues are often related to one or more 555 timer chips. Here's a nice explanation of the discrete audio sections for Phoenix:
http://derrick.mameworld.info/docs/Tutorial/Phoenix/Phoenix_From_Start_to_End.html
