So I just bought a Sega Genesis model 2 from one of my friends and after hooking up to the TV through a coaxial (along with the power source), the screen was just black, totally silent with the exception of some faint flickering sounds. So after trouble shooting a couple of times, I got it to work a few times, playing Sonic 2 and what not. However, most times I try it, it still won't work, unless I keep on trying. Has any of you had this problem happen to you? Is it the coaxial cable? or is it the Genesis itself?