Please help. I had my N-64 and GC using the same hook up cables (trying to cut down on wires and keep cables into back AV inputs) I would switch the cable back and forth between GC and N-64 and life was beautiful on my old RCA tv, now I just bought a cheap sylvania and neither system will work on the new TV, just an unpleasant buzzing noise instead of audio. What is the problem? Is it something to do with analog vs. digital? What cables will allow me to play both systems? Any feedback is appreciated!