On point 3, The screen captures in both instances came back displaying the GUI perfectly.

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That's good, we know that most of the card is likely functional.

Is the ScreenShot for the Radius Card in B&W or in Color and what resolution is displayed?

Do you have any documentation? In which slot are you installing the card?

I ran into some strange NuBus Voodoo when Installing multiple VidCards for the Full House Series. Try installing it in slot one, the furthest to the left when facing the front of the computer.

On point 4, The VRAM is soldered directly to the card. I can provide a picture of the card, but I am unsure which chips represent the VRAM.

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They're soldered on in droves on a card like that, if they're little flat rectangular SMT Packages they're harder to replace. If they're vertical elongated boxes in a thru-hole package with the pins in a Z pattern, they're far easier to replace.

1 other thing I noticed, during a subsequent boot one of the icons from the init parade displayed itself in the upper center of the screen (along with all sorts of other strange patterns.) In addition to the placement, the image was drawn as black and white. It appears that the card is not displaying color as well.

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Sounds like there might be something wrong with the driver/address mapping scheme, dunno I'm not that kind of expert.

If the any VidCard isn't set up properly in the PRAM (are your PRAM Batteries Good?) it'll almost always default to 640 x 480 x 1bit .

Have you set up the card in the Monitors Control Panel or is there another one for the card loaded by the Radius Software?

I'm not entirely certain where we're going in this troubleshooting session yet, just trying to nail down the basic steps of the process and config of the card.system.

Pics of the card at high resolution would be GREAT and some pics of the screen artifacts would help just as much.

Checkerboard sounds like simasimac, which might mean bad caps on the Card, Vertical lines/artifacts might be something like timing crystals or VRAM . . .

. . . dunno, let's see where it goes. [] ]'>