Monitor help, color inverted, where to start!?

[yocke]

 

What happen to my monitor, looks like the colors are inverted!
Where do I start looking?

[iankellogg]

check harnesses. try to plug another game into the monitor. maybe a game with a test pattern?

[TimeRunner]

check harnesses. try to plug another game into the monitor. maybe a game with a test pattern?

Is the degaussing coil stuck on? Or maybe it's not on at all?

[yocke]

Ok, it was an degaussing problem.
After using my degaussing tool it became normal again...!

Wonder why it became like this... Natures magnet field?