Wii consoles come with default composite cables that feature a single video cable and two audio jacks. The picture quality is made for standard TVs, but if you have an HDTV, you can upgrade to component cables. Component cables split up the video connection through three plugs. When doing this, you may have a blurry picture that needs adjustments through the physical cables and the Wii console settings.
Check the cable connection to your device. There are three cables: red, blue and gray. Make sure the cables are all matched to their proper ports and pushed in correctly. Check the connection port on the back of the Wii. Pull it out and set it back into place. Any loose cables could cause a blurry picture.
If you feed component cables from the Wii through another device to reach the TV, then the connection could cause an error. For example, if you connect component cables into a cable TV box and then into the TV, the connections could scramble and cause the blurry picture. Connect the cables directly to the TV, if possible; if not, switch back to the standard composite cables and connect directly to the TV.
Adjust the system settings on your Wii to give the best picture possible for component cables. Click on the "System Settings" icon on the bottom of the Wii main menu. Select the "Screen" submenu, go down to the "TV Resolution" menu and select the first setting, listed as "EDTV or HDTV." Click on the "Confirm" icon, then return to the Wii menu to see the upgraded picture.
Some HDTVs have issues when upgrading the Wii's picture and graphics. If the image is blurry on your TV, try the connection on another TV. If the image quality improves, then the issue is with the first TV. Try using different component cables or another connection process to improve the image.
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