I need tips what could be a problem with gigabyte 3060 ti eagle v2

[novice2009]

Hi!
I'm trying to fix the mentioned graphic card.
Symptoms:
positive:
1. cards provides signal, actually I'm typing right now with this card.
2. I can reflash bios with nvflash64. I replaced bios with one from the TechPowerUp collection and behavior of the card didn't change. Used version of the bios was the same as the native one.
negative:
1. right after power on fans start spinning and stop. And I can't make them live (for cooling I'm using external fan). PWM signal on fans drops from 1 V at power on to just 0.4 V. MSI afterburner just doesn't see the card. The card is in riser and when the riser is disconnected from PCI-E bus, fans are spinning.
2. Driver installation goes normally but in the hardware manager window I see yellow warning sign.
3. Weird thing - may be it is normal for initialization but core voltage jumps up two times after power on, from 0.757V to 0.959 V and then remains at 0.757 V. And in thermal viewer I see that memory chips are switching off shortly one time at about 3rd second of power on. And exactly at this moment core voltage jumps up to 0.959 V. Voltage on vRAM is 1.37 V.
4. Reflowing of the GPU didn't help. Situation is the same.
5. Z-GPU attached.

Does it makes sense to reflow vRAM chips?
I would be appreciated for your suggestions.

 

[Waldorf]

tried it without the riser, maybe different slot/pc?

 

[eidairaman1]

tried it without the riser, maybe different slot/pc?

The problem is the riser cable

 

[novice2009]

tried it without the riser, maybe different slot/pc?

The card behaves similar as in riser so and in PCI-E slot of the PC.

 

[novice2009]

Update:
MATS test says that FBIOC1 has errors. But sometimes test failed, sometimes passed.

 

[Vya Domus]

Uninstall drivers using DDU, try older drivers, if nothing works it's dead.

Does it makes sense to reflow vRAM chips?

No, not worth the effort, the thing is done for.

 

[Solaris17]

Update:
MATS test says that FBIOC1 has errors. But sometimes test failed, sometimes passed.

If a memory IC is passing and failing at random, then the correct deduction is that it is bad. It isnt going to fix it self. "Stable sometimes, unstable sometimes" means it isnt stable.

 

[eidairaman1]

If a memory IC is passing and failing at random, then the correct deduction is that it is bad. It isnt going to fix it self. "Stable sometimes, unstable sometimes" means it isnt stable.

Yeah intermittent faults mean its going bad

 

[novice2009]

Got it, thanks. As I realized from some videos, I have famous x005 chips. And one more weird thing - memory vendor defining strips do not correspond to any combinations from a schematics for GA104/GA106 GPUs.