Video Game Tech
Sega Master System - S-video
Uses neogeousa.com schematics.
I chose to reuse some s-video jacks that I had, so I glued one on in the location that the RF modulator used to be.
I also prefer to prewire my mods on perfboard.
Ground, +5, and Y/C leads attached
Bench testing on my Commodore 1702
I like putting jacks where the modulator used to be. It just looks so clean.