Hi all. I have a strange problem with my vga-scart cable/TV, and I'm in need of help.
I have 2 TVs, and 2 graphics cards on the same PC.
In the first TV (we'll call this the "BAD TV"), both my arcade PC and my Nintendo Wii are connected to the same scart RGB port, using an adapter. Obviously I have only one device on at any time, the PC or the Wii.
In the second TV (we'll call this the "GOOD TV") my VGA-Scart Cable works flawlessy, with both the first and second graphics card.
In the BAD TV, the colors have a defect I cannot describe. It's evident when looking at the "color bar" in the card properties, under color depth: the color aren't distinct, red green and blue blend: red blends with purple, cyan with yellow, green is faint. Yellow and purple show fine.
But, if I look at the icons on the desktop there's no color bleeding/shifting: red, green and blue look fine on their own.
Now the strange thing: If I connect both the vga-scart and the Wii Scart cable (Wii powered off, not connected to AC adapter), the colors are correct. If I connect only the vga-scart, the colors have the problem described above.
The same cable when connected to the second TV (Good TV) works fine.
So, I investigated what was different in the Wii Scart cable even with the Wii not connected to power, and it looks like Red and Green get between +1,5v and 2,4v, while Blue gets between -1,5v and -2,4v (yes). Those values were misured with my multimeter, using the voltmeter and testing scart pin 17 as ground and the red,green blue scart pins. The other pins don't affect the signal. Only pin 17 acts as ground, the other grounds are not present in the Wii RGB scart cable.
In short, looks like my BAD TV would prefer having a "stronger" colour signal, where the Good TV doesn't care.
Any idea on how to solve this, other than keeping the wii-scart cable connected at all times?
I would change the TV with a newer one, but new CRTs are hard to find and I don't have money.
There must be a way to make it work...
Any and all help appreciated.