Recently I have manufactured a custom stick with retroboard (rj45), db9 For Sega Genesis and db15 for mvs and Neo Geo.
The thing is, I’ve made it common Ground And I’ve joined the vcc 5v of the brook And I’ve joined the vcc 5v of the Brook Retroboard pcb and Genesis hackpad.
It goes perfect in Genesis, goes perfect in Neo Geo, goes perfect ps3 and ps4 but I have a problem when I plug the stick into a Snes (In both crt and lcd)
And several lines appear on the screen, red green and blue, They’re going up. If I disconnect the rj 45 lines disappear but if I plug it in, they reappear, what may be going on? I’ve been reading in forums for three days, and I don’t find the solution, or Someone who has happened the same thing
I hope you can help me
I’ll leave you a video and some pictures of the problem