I rescued a voodoo graphics (v1) card from the scrapper yesterday together with lots of other parts.

I made it a habit with these cards to really check the tiny legs of the chips as they seem to get damaged fairly easy. These were all good and nothing seems missing on the card (compared to another one of mine).

I ran some tests on a system that usually holds a v1 and everything 3d on this v1 seems black and white and 1 color: red. So i'm missing the GB from RGB 🤣
It is the same in glide and direct3d. There is a matrox in there that works fine so the passtrough and output to the monitor works.

As soon as i replace it with my own card it is all working fine again.

What is wrong with this card and can it be fixed easily?

Thanx!