I feel you Savanna...For overheating of anything to be an issue is a gross oversight. There's just no excuse.
It makes me wonder thought why this isn't bigger news...like the Xbox RROD. Perhaps it will be? Or is it only a few consoles.
I think the difference is it’s really tough to miss an RROD. An RROD isn’t really something you can just ignore and keep on playing.
It's possible that most people won't notice the errant pixels on the Wii for the same reason I didn't notice for so long. I had the Wii plugged into a 27" SD CRT for the last three years or so. A lot of TV channels (yes, on cable,

you Comcast) tend to look pretty crappy to begin with. So you get used to seeing a little bit of random static. With the Wii plugged into the 27" on Composite cables, this is exactly what the errant pixels look like, random static. Feed that image into a 42" TV, swap in some component cables, and that errant static "pops" and becomes very very noticeable. Going back to the composite, you then realize what you thought was random "static" from a crap TV is actually random pixels from a crapped Wii.
Not that the manufacturers will tell you this but it's unreasonable to expect any compled consumer level electronics product to run 24/7 for years without some sort of failure. Consumer electronics simply aren't built to that standard. Even "always on" stuff like Tivos only last a couple years before some component fails. That's the difference between commercial hardware and consumer hardware. Would anyone buy a console that cost $1000 but was guaranteed to last 8 years of continuous duty?
That’s true to a degree. Most consumer electronics are operated in a reasonable and expected way and, more importantly,
designed that way. Figure the average weekly usage of your TV (in an American household) to be about 30 to 40 hours a week as reasonable vs the same TV used as a menu screen in a restaurant at 12/7 to 24/7 as excessive.
With the Wii, that really isn’t the case. Nintendo specifically designed the Wii to default to the Standby state, both through the WiiMote function and panel face. You have to force the Wii into a lower “off” state through the panel. Even though it’s not exactly encouraged by Nintendo to place the Wii in standby mode, Nintendo really does very little to encourage users to power down the Wii. It’s not the default option. There is no way to make it the default option. You can’t power down to off with the WiiMote and you have to know to hold down the Wii power button on the panel to bring it to this state.
In any case, I expect wear and tear on physical moving parts such as disc drives, fans, slot connectors, etc. I also expect cap failure and even the occasional hit & miss on MTBF for the solid state components.
What I don't expect are design deficiencies causing a product to fail or behave outside of spec well before anyone expects it to fail.
In all fairness, the Wii shouldn't have this problem because it should never have been designed in that way, period. Given that there are several possible (and easy) ways to prevent this from Nintendo’s side, it makes the failure all the more annoying.