wantdataeast
Member
I am working with 3 different board sets for Helifire. Board are CPU, I/O and ESS. I have cobbled together one working board set. Now I am testing the left over boards trying to build another working board set. Testing the I/O boards now, one is good, the other is giving the sound on the machine a constant hiss. I can still hear the game sounds but the hiss is constant. The sound amps and sound chip are on the ESS board. Something on the I/O boards is causing it. BTW I am using all the wire that connects between boards on the known good set up. Anyone have an idea what area of the I/O board could be giving me issue? (Also, it is my understanding that this I/O board is very similar to the one that was used on Nintentdo Sheriff, if someone has encountered a similar Issue with it)
