I've got a strange issue, and I've googled around for a solution and am trying to troubleshoot, but thought I'd post it on here to see if anyone else has seen/dealt with it before I RMA my Wii...
I've only had my Wii for a couple months, and last week I bought a Component cable to run 480p. Instantly, I noticed a huge downgrade in graphics quality including jagged edging and such. Worse yet, I noticed a strange rendering problem when I get massive clusters of pixels show-up at random and are skewed or totally incorrect colors. In the main Wii menu, there's a couple skewed pixels in the white-space, and then playing games like Zelda is REALLY noticeable in the video sequences... massive amounts of pixel clustering that looks like incomplete rendering or something along those lines.
Now, here's something a bit more concerning. I've tried different component cables, as well as going back to the composite cable. Whether in 480i or 480p does not make a difference, and being on composite makes the picture smoother and such, but you can still see the pixel clustering, it's just less obvious.
I'm testing my Wii on a friend's TV tonight to rule out my television... but do you think it's my Wii or just a commonality?
Any help/light on the situation is always appreciated.