Yeah man try new cables on it. Or maybe try hooking it up to a different TV. Does it turn on?
It's probably the cables that hook onto the TV. Make sure they're all the way in, and make sure the port that goes into the N64 is all the way in. Also try blowing it there might be some dust that's causing a problem.
hey, on a serious note, try unplugging either the red or yellow (i cant remember which 1) but it works 4 me. i cant hear it unless i UNplug 1 of em. let me kno how that works out 2.