Chosen Solution
I bought a super Nintendo cheap with 4 games. It didn’t come with power cords, but she claimed that she took it to a pawn shop and it read her games. I took it home, hooked everything up, put one of the games in and nothing. So i ordered a new power cord and when it came the super Nintendo turned on with no sound or image. But without a game it does nothing and with a game the TV flashes but still no sound or image. Somebody please help!
You have to have a game in the system for it to show up on the screen there is no splash screen like later consoles. It may be a bad a/v or rf cable depending on what you are using. Honestly your best bet is to find someone with a snes and borrow their cables to test the system itself. That way you can tell if it is your cables or the system. A friendly game store may help you test it if you were to purchase a replacement cable from them if that proved to be the case.