https://www.youtube.com/watch?v=4oZlt9Dl43I&t=1318s

This Video is one of my favorite when going to inspect any of Voodoo 2 😀

It is easier than desolder all of the ceramic caps...

Even though, this could be the first suspect if the V+ is shorted

butjer1010 wrote on 2025-11-24, 13:44:

Even though, this could be the first suspect if the V+ is shorted

Removed the v-reg from the board and the short to ground is still there.

Lostdotfish wrote on 2025-11-24, 14:15:

butjer1010 wrote on 2025-11-24, 13:44:

Even though, this could be the first suspect if the V+ is shorted

Removed the v-reg from the board and the short to ground is still there.

I presume You did check the legs of all 3 major chips for "shortening"?
I also managed to fix 2 Voodoo2 cards with changing "resistor rows". One or two, out of four, were faulty, but i don't think this is the case here. Don't think the short is in resistors, because if it is, You would see this 😀

Thermal camera would be helpful here.....

butjer1010 wrote on 2025-11-24, 14:23:

Thermal camera would be helpful here.....

yup - don't have....

don't even know where to start other than pulling more caps out of circuit... can't fault find when everything measures a dead short...

5v on the card edge is shorted to gnd on the card edge.

butjer1010 wrote on 2025-11-24, 14:22:

Lostdotfish wrote on 2025-11-24, 14:15:

butjer1010 wrote on 2025-11-24, 13:44:

Even though, this could be the first suspect if the V+ is shorted

Removed the v-reg from the board and the short to ground is still there.

I also managed to fix 2 Voodoo2 cards with changing "resistor rows". One or two, out of four, were faulty, but i don't think this is the case here. Don't think the short is in resistors, because if it is, You would see this 😀

Most of these fault fail open not short. Same with the other resistors on the card - they are much more likely to fail open than become a short...

Lostdotfish wrote on 2025-11-24, 14:56:

butjer1010 wrote on 2025-11-24, 14:22:

Lostdotfish wrote on 2025-11-24, 14:15:

Removed the v-reg from the board and the short to ground is still there.

I also managed to fix 2 Voodoo2 cards with changing "resistor rows". One or two, out of four, were faulty, but i don't think this is the case here. Don't think the short is in resistors, because if it is, You would see this 😀

Most of these fault fail open not short. Same with the other resistors on the card - they are much more likely to fail open than become a short...

Yep, that's way i said You need to check board visually, because if the resistor is shorted, You can see it 😀
If You saw this video i have sent You, there is a easier way to see if the cap is faulty, You don't have to desolder every one...
Just go to the end of video 18:24 - Voltage measurement

butjer1010 wrote on 2025-11-24, 15:08:

Yep, that's way i said You need to check board visually, because if the resistor is shorted, You can see it :) If You saw this v […]
Show full quote

Lostdotfish wrote on 2025-11-24, 14:56:

butjer1010 wrote on 2025-11-24, 14:22:

I also managed to fix 2 Voodoo2 cards with changing "resistor rows". One or two, out of four, were faulty, but i don't think this is the case here. Don't think the short is in resistors, because if it is, You would see this 😀

Most of these fault fail open not short. Same with the other resistors on the card - they are much more likely to fail open than become a short...

Yep, that's way i said You need to check board visually, because if the resistor is shorted, You can see it 😀
If You saw this video i have sent You, there is a easier way to see if the cap is faulty, You don't have to desolder every one...
Just go to the end of video 18:24 - Voltage measurement

He's measuring off the vreg while heating the caps. Can't do that with a dead short on v+

Lostdotfish wrote on 2025-11-24, 15:18:

butjer1010 wrote on 2025-11-24, 15:08:

Yep, that's way i said You need to check board visually, because if the resistor is shorted, You can see it :) If You saw this v […]
Show full quote

Lostdotfish wrote on 2025-11-24, 14:56:

Most of these fault fail open not short. Same with the other resistors on the card - they are much more likely to fail open than become a short...

Yep, that's way i said You need to check board visually, because if the resistor is shorted, You can see it 😀
If You saw this video i have sent You, there is a easier way to see if the cap is faulty, You don't have to desolder every one...
Just go to the end of video 18:24 - Voltage measurement

He's measuring off the vreg while heating the caps. Can't do that with a dead short on v+

He didn't measure voltage while the card was in PC, turned on, he measure it on table! There is some small voltage when they are cold, but it goes up when warmed up.

Now i get it!!! 😀 😀 😀 I was doing few things, didn't even think about what You said 😀!!!
There is no voltage at all when they're shorted 😀 😀 😀

I'm beginning to wonder if the DAC is internally shorted....

I've pulled a lot of caps, all the ferrites, the diodes.... There's a lot more caps on the board still but it will be a hell of a job to pull them all...

Lostdotfish wrote on 2025-11-24, 18:40:

I'm beginning to wonder if the DAC is internally shorted....

I've pulled a lot of caps, all the ferrites, the diodes.... There's a lot more caps on the board still but it will be a hell of a job to pull them all...

Hope You'll find the problem soon...

What about tracing the pads of FB10 and see where it connects to? Since ferrite beads are in series with other components, those parts would likely also be destroyed.

DAC is off - still shorting to ground...

this card is frustrating

asdf53 wrote on 2025-11-24, 19:57:

What about tracing the pads of FB10 and see where it connects to? Since ferrite beads are in series with other components, those parts would likely also be destroyed.

I'd expect most things to fail open rather than fail short... I've moved all the caps in the same area off their pads, still shorting.

I can tell You that when You repair it, the feeling will be - It totally worth it!!!
Don't give up.... or wait someone smarter than me to tell You some direction where to go 😀

Lostdotfish wrote on 2025-11-24, 20:37:

I'd expect most things to fail open rather than fail short... I've moved all the caps in the same area off their pads, still shorting.

But transistors fail short, and ferrite beads are often connected to transistors.

The RAM ICs, clock buffer IC (next to the RAMDAC) and the VGA mux IC also sit on the 5V rail.
If you don't have a thermal camera, you could try applying some IPA, inject current into the 5V rail, and see where it evaporates first.