Something wrong with my 360

When I watch a movie or listen to music on my 360, it makes some weird ass buzzing sound. Sometimes when a match in a game is loading too. For the longest time, I thought it was my tv since it's older, but it's not. Do I need to buy a new cable or something? It's not on the verge of RROD if that's what you're thinking. It's been doing this sent they sent me this one last August. It's really annoying having to watch movies on the ps2 because of this :lol

do you get a clicking sound after the buzz, cause i have that too, on different xboxes for my problem its the av cord not the box

Yeah, that's it. So I guess I just need to buy a new Av cord.