Originally Posted by blaket81
My Wii started doing this over a year ago when i started playing silent hill shattered memories. I blamed the game and then let someone borrow it and hadn't tocuhed my Wii much since. I just bought legend of zelda skyward sword and dusted off my wii and to my surprise crappy red and green dots, they are at random places not fixed. My tv does not show these dots at any other time except on component with Wii. It only does it on 480P, not 480i, it may do it on 480i but not nearly as much so i don't notice it. At this point i'm hoping it's my component cables and not my wii but with my luck it's the Wii. I'm just going to suffer with them if it's the wii as i'm not going to buy a new wii at this point. Has anyone else seen this that can tell me what it is?
Im not sure a definitive answer has ever been given, but the most likely culprit is an overworked & slightly cooked graphics chip/processor.
Games heavy with detail (as far as Wii games go - IMO it is those games that look most like PS2/GameCube era titles, usually 3rd party ports) that will occasionally exhibit the random pixels you are seeing. Most famously popped up in a 1st party game - Super Smash Bros Brawl - quite some time back, but can appear in many games and even on the main Wii Channel menu.
I have seen this phenomenon myself. Saw it mainly with RE IV, Silent Hill, Madden 10/11, most all Wii Call of Duty games, etc. I can also confirm that I have seen it @ 480i, both component & composite.
The ongoing theory seems to be that this is due to the Wii's primary graphics processor being located right next to it's WiFi circuitry. If the Wii stays in standby/WiiConnect24 mode, said WiFi is always on & can generate a decent amount of heat, whcih over time can do some minor damage to the graphics chip. Some recommend leaving WiiConnect off & fully powering down the console between sessions. But AFAIK, this theory has never been confirmed by the big N.
That said, it is something that Ninty will fix for you should you choose. Most likley you get back a refurbed Wii (not your original one) with all your save data transferred over to the replacement.