Took a day to track down an interesting issue: an absolute ton of noise coming out of the `gscart` SCART switch. It was bad going through the RetroTINK 5X and intolerable coming through the RetroTINK 4K. Started with the SNES, swapped out cables and it was still there. Then copied the ROM and save state over to the MiSTer and saw the same exact issue with analog output from the MiSTer.
It was weird because the SNES is RGB modded via Voultar's SNESRGB and should have some absolutely pristine RGB out, and the MiSTer should also have some great RGB output via the Saturn RGB output on the back. However, after some fiddling and upgrading the MiSTer: it was the USB power going to the `gscart` switch.
I was using the USB outputs on the power strip attached to the AV cart. After moving it to a known quality USB power adapter, the noise was gone.
TL,DR: If you have a `gscart` switch, make sure you supply it with some quality power otherwise you're gonna have a bad day.
#retrogaming #gscart #scart #snes #mister #crt #retrotink