MiSTer FPGA Forum

I’m working on modding my Trinitron for RGB. Going to install BNC jacks.

Would this be the appropriate device to do horizontal centering (if needed) for the signal? Would I just run a vga cable from the IO board to the box, then BNC to the tv?

https://www.ebay.com/itm/302758792839

That particular extron has a 9 pin input, not 15 pin VGA style, so you'd need an adapter of some sort. I would recommend the RGB 109xi. it has an attached VGA cable that you can plug directly into the IO board, and it has horizontal centering controls. I use one with the MiSTer and it works great. There are several cheap ones on ebay right now.

Please note that the Extron RGB units output a TTL level sync signal, which is probably too high of a voltage for a consumer tv. Therefore, you should put a 1k resistor in series on your sync line inside of the TV to lower the sync voltage.