If your TV is older and has component inputs it may not be progressive scan. Nicer older models (pre-HDTV or EDTV) can have component inputs but may or may not offer 480p.Originally Posted by DaWgX
That being said, even if you can't take advantage of 480p/EDTV resolutions component cables still offer an upgrade in visual quality, albeit small.
Id trouble shoot the issue by hooking up the composite cables it came with and giving it a good look over paying particular attenton to how pixelated the overall image is. Then, hook up the component cables again and keep the setting on 480i. Get to the same screen (the channels menu works great) you viewed for pixelation and compare this new image with the component input being used. Generally, component cables offer less pixelation on all TVs, whether its HDTV or good ole' 480i.
If you have a widescreen TV it should at least be 480p. If thats the case make sure the inputs are color matched properly (as stupid as it sounds when I got my component cables and hooked them up to the Wii I switched the green and blue inputs by accident because it was dark bhind my TV and both colors look similar in low light) and that they are in secure.
If none of that works I would retrn them and get the official nintendo cables.