Hi,
my SiD don’t want to play. I use a C64 PS, voltages are OK everywhere, LCD works, CS is ok to, i can modify params.
I only ear noise when i amplify input gain on my mixer. I’ve tried different patchs and i can ear them low behind the noise when gain is very high.
So i made the interconnect test and it give me only 5V on RES, 0V anywhere else. Connection between CORE and SID is Ok, i have test with other 74HC595, a new Sid chip, nothing better 
Any ideas? 