Just bought a GameCube
Powered it up and it works fine, with the exception that I get no video display on the TV. I get sound.

I plugged the red/red, white/white, yellow/yellow

Is it a bum cable? A bum GC? I think the TV is fine as other cables work.

I dunno. Not very good at these things.
So, I ask if you have any suggestions.
That's all.