All I can think of is that the Newer patch is trying to read something from the disc the normal game doesn't, and fialing to read it. Which is strange, but again, all I could think of. I would do a read-only verify of your disc using CleanRip 2.4...
Those new Wiis with 4 layer boards don't get hot enough to kill the caps. The fact it's outputting nothing at all is very concerning, even if Wi-Fi and Bluetooth were missing it would still at least output a black screen. No output means the Wii...