TheAmericaMan

Oh, it's just the Wii Part? That's actually not that uncommon. I've even had that where when my Wii was hooked up using a HDMI switch Wii mode was stuck in Red unless I brought the resolution down to 480p. My guess is that Wii Mode emulates a component connection and there's a glitch when the HDMI receiver is not completely standards-compliant.

Any idea why all of a sudden this would happen when ive had this set up for almost a year?

Maybe it's your HDMI cable? If your cables are all plugged in and stuff, try changing the plugs back to how they were on the Wii but put it in the Wii U.

I am using HDMI and I secured everything and checked again. I also swapped out the HDMI with the one on my PS4 which works fine and still had the same issue.

Ill throw on the pictures showing the Wii U part is working fine and just the Wii part is giving me the color issues.

It is not possible to remove the data from previous firmware updates.

 

Your issue is certainly a peculiar one. It is probably wise at this stage to contact customer support  and see if they can shed any light on the situation.

I guess i'll write a complaint. I was on hold with their help-line for an hour and a half with no answer so we will see.

Am not sure but i had a similar issue in the past here are some solutions

1.Switch off the system and Switch it back on

2.Switched to non-hdmi display output

3.play the Wii game on the gamepad(as final solution)

 

If non of those dont work call nintendo

I did swap it to 480p and It does play in color but makes my games look blocky and distorted. I am seriously upset that this happened out of nowhere and has no good reason for doing so. I also often play between Wii and Wii U games and never had to change an option in the past. Is it possible to remove the last update?

maybe its your TV, Try a different TV.

But why all of a sudden would my TV not be compatible with the wii mode when it has been for over a year.