4070 Laptop Vcore Resistance?

[danlopez1222]

Can anyone with a functioning 4070 laptop check to see the resistance from vcore to ground? I've got an XPS 9530 that does not detect the NVidia gpu and the vcore that seems shorted, but also boots up which is throwing me off. The chokes around the GPU are sitting near 60C at idle.

Cant tell if this is a shorted component or fried GPU. I didn't see any mosfets hotter or colder than the others. GPU die doesn't seem to heat up much without a heatsink.




A desktop 4060 will also suffice, since they use the same die.

[danlopez1222]

So I found the issue: UV1 on the back of the motherboard for determining the GPU had been sheared off, so the GPU was powered but not detected; replacing the logic gate with one from a donor board fixed the issue. There also seemed to be a loose capacitor on the back of the motherboard near the GPU vcore area.

Also, to answer the resistance question for anyone in the future, it looks like 0.76 ohms on a laptop RTX 4070 vcore is within spec.

[_adr]

So I found the issue: UV1 on the back of the motherboard for determining the GPU had been sheared off, so the GPU was powered but not detected; replacing the logic gate with one from a donor board fixed the issue. There also seemed to be a loose capacitor on the back of the motherboard near the GPU vcore area.

Also, to answer the resistance question for anyone in the future, it looks like 0.76 ohms on a laptop RTX 4070 vcore is within spec.

Hi i have the same problem but i checked the UV1 and seems fine, any hints on what it could be?, thank you