SD slot does not read any SD card.

Hi (first of all please excuse my poor english), I have a Wii with a strange problem, when I put an SD card on it the SD icon on screen get turns blue but when I try to read the SD card on him it wont work and keep's me saying "The device inserted on SD card slot can't be used.". Also him dont grab the disk (but this, I think, is another problem not related with my first problem).

I have tried a lot of cards with 512mb, 1gb, 2gb, 4gb and one with 8gb (that works on other Wiis), and have read a lot of pages on internet before posting this here. I think its some problem on hardware or some error when it update.

I have experience with soldering but think better ask before do the same I did on my 360 (dead ^^).

The wii is up to date and have never been unlocked.

If someone could help I appreciate (and one more time sorry for my bad english).

Graciously, HigorEvil.