I sent my Wii in this past weekend due to a loud vibration/buzz coming from it while playing games. I'm curious if anyone else has had this problem.
The problem occurs after playing for a few minutes, as the Wii warms up. It gets loud enough that it's louder than the game music and my projector, which sounds like a small fan at all times. The sound will always be there, but will change in loudness depending on what you're doing. Metroid will be loud continuously as it seems it is always streaming data off the disc as you go from room to room. Paper Mario would get louder each time I entered a house or exited it.