4kTV not recognizing old consoles

Yoshis95

Honorable
Jul 22, 2013
46
0
10,530
Hello, so i have a vizio 4k TV that has composite ypbpr and also the option to use those ports as standard Yellow, Red, White. And my Wii and Sega Dreamcast works just fine on it. But however if i hook up the sega saturn or my sega genesis, i receive a blank screen and no audio. I know both these consoles can output video signal because i have tested both of them on a different tv just fine.
So my question is, what RCA to hdmi adapter actually works to allow these low res signals to be picked up by the TV?
Also i might be crazy but i think i remeber the genesis working on this tv before? But i cant remember.
Thanks a lot in advance!
 

Yoshis95

Honorable
Jul 22, 2013
46
0
10,530


I have the input on COMP and whats weird is if i plug in the audio cables for the genesis and plug in the video from the wii, I get audio from the genesis, but if i plug in the genesis video i get no picture or sound from the genesis