I am not sure but (for me) it looks like he change the video output from NTSC to PAL or VICEVERSA... some games (PAL) look like that on my wii (before it died) when playing using RCA, but it looks fine using composite... try connecting your wii to TV using composite and use anyregionchanger again to change it back to your region...by grovoz - FixMii
my wii is brick... it happened when I was trying to install priiloader v0.6 b3. in the middle of the installation I got an dsi exception error... i had to hold power button to turn it off... I press power again and now i dont have video signal, the wiimote can turn on the wii but it don't sync any further... I already tried holding reset but nothing happens... (with bootmii and priiloby grovoz - FixMii