Hello Everyone,

I've got my Q3D card that I'd love to refurbish. I've had it in storage since I last used it in the early 2000s.

I've run witchery off freedos. It asks for which card since the x-24 is sli on the one card. The first card under witchery is the main card.

So, here is what I've done, tried so far. Witchery isn't getting to the point where it is testing FB memory, it is failing at the ramdac. I also saw on one 3dfx troubleshooting site that cards that do pass through video but fail(black screen) when trying glide, which is what mine does, have bad ramdac chips. So I removed/replaced the 'bad' ramdac chip with a known working one. Still have same issue. Witchery asks about FBs, and voltages on either sides of FBs, Capacitors being above ~300 ohms, bad solder joints, checking for proper voltages, making sure no broken traces, Making sure certain pins between ramdac an fbi chip are connected, certain pins between ramdac and xtal are connected, no shorts between adjacent pins, no shorts between certain pins and 5v or gnd...etc. I've subsequently checked all RAs Rs Ls Cs and FBs on both sides of this board with a DMM and a Magnifying glass. No bad solder joints or traces, No bent pins on anything. Everything measures fine. It is a very clean looking card, a little dusty... Witchery also suggests reflowing fbi chip, which also I've done.

I then did some googling on the errors and on one link

What are some common failure modes for defective Voodoo2 cards?

One post mentions that a bad fb edo ram chip might keep the fbi chip from correctly communicating with the ramdac, which might be my problem? I'm very stumped at this point. Hoping it is a bad fb ram chip. But maybe the FBI chip?? If it could be the fb ram chips how would I try to narrow down which one(s)?

Thanks,

Will

Here are shots of witchery output: