I’ve recently discovered a buzzing noise coming through the audio outputs on my SNES Mini and it’s driving me nuts.
My 2 older SNES consoles are quiet using the same cable and same power supply. Here’s what I’ve tried:
Built my own shielded cable from a VGA cable.
Removed DIY RGB amp and wired right from the video chip itself
Run audio lines separately from the multi out. I have not tried to run it right off the chip itself.
Replaced 7805 Voltage Regulator
Anyone have any other ideas? I’m at a loss here. It’s extremely noticeable on the SD2SNES menu screen and barely noticeable during gameplay but it does happen with legit carts as well.