Got an old element tv and I've been trying to set up a firestick but it's not a smart TV so I brought a HDMI to AV converter but now I got a rainbow screen with a blue NO SIGNAL on it.

Model: TA-HDS01. The yellow AV cable is in the green plug and that's the only way it will even show me the no signal screen while my converter is on NTSC but I looked at the YT videos and it does NOT look like what they use. TV is a model ELEFW195