MiSTer FPGA Forum

Hey, just wanted to chime in that this happens to me too. Even within the same game, occasionally some tracks will play and others will either do nothing or play a single note and stop working. My Mother II set I have plays like 1/5 tracks and the Super Metroid one I have plays nothing at all. But most sets I've tried like Tetris Attack or DKC2 wor...

https://imgur.com/gallery/OW99vtP

Here is my Astro City/PVM/LG OLED setup!

Threepwood interesting, so perhaps it's a manufacturing fault rather than a design fault? Did you get both of your I/O boards from the same seller?

So I bought a HDMI to VGA dongle to rule out that the J-PAC was the issue and sure enough colors look perfectly fine when using direct video through the J-PAC. I think you are absolutely right that the SOG switch/capability is causing the issue with green - if someone knows how to disable the SOG functions on an I/O board please let us know.

I am having a similar but slightly different problem with the I/O Board and another Ultimarc product, the J-PAC (which includes an amp i believe is very similar, if not basically identical, to yours). In some scenes (darker scenes, mostly) green comes through fine, but in brighter scenes the green drops out, leaving the color more red/purple. Seems...