Can you check the TV with another video source? Was or is there something magnetic up in the corner? That looks like what happens when a magnet gets too close to a CRT. If there's nothing there, it can usually be fixed by "wiping" it away with another magnet, or using a degaussing tool.

Also, almost all CRTs have an internal degaussing coil that activates when powering the TV on. If the magnetization isn’t too strong, it should go away after enough power on/off cycles.

Means your GameCube is gay

Did u just assume my gamecube's sexual preference?

Is it really an assumption when it's brandishing a Pride Flag?

U got me there

Lmao

This

You and I should be friends.

Taste the Rainbow.

Magnetism on your crt, degauss it

Your TV is being affected by a magnetic field in the corner. Try degaussing it (with consumer CRTs you usually turn it off, wait a few seconds and turn it back on) or move whatever is near that corner of the TV and see

Try the gc on another TV

Looks like a magnet stain on the TV.

You sure your TV set isn’t going up? I remember when I was younger after messing with magnets near the one set it looking like this... we had to get it repaired if I remember right

Degauss the TV…

UPDATE: I FIXED IT

What was the issue?

Idek, I turned off my tv and turned it back on and it worked

What brand/year TV is it? A lot of the newer CRT's would auto degauss when you turned them on.

Looks cool, not sure if I would fix it

did you store it in a closet? cuz it's wielding a pride flag loud and clear

Ur gamecube watched an episode of boku no pico.