Gigabyte GTX 1080 G1 Gaming voltage present but not detected

[Traptor]

Hi guys,
I have a Gigabyte GTX 1080 G1 Gaming 8GB gpu. The earlier life of this gpu is unknown.

Fans are spinning on full speed.
All main voltages presents but gpu not detected by motherboard.
The voltage on pin 1 of the bios is constantly 1.8V

During visual inspection i noticed a brown spot on the top of the chip.
Maybe burned this GPU?

Does anyone have an idea where I should go next?
How do I check if the GPU is still alive?

[ktmmotocross]

pour ipa on gpu to see if it is not hotspot on that burned part

[Traptor]

pour ipa on gpu to see if it is not hotspot on that burned part

IPA test wont gave any help, there is not hot spot on the GPU

[ktmmotocross]

IPA test wont gave any help, there is not hot spot on the GPU

what was injecting power?

[Traptor]

what was injecting power?

I did not inject power from outer powersuply, because the gpu is powering on.
I have vcore so I there is not short in the circuit.

Did I misunderstand your suggestion?

[victorioz]

Try to change crystal oscilator and 100ohm resistor near the crystal.

[Traptor]

Try to change crystal oscilator and 100ohm resistor near the crystal.

i will try to replacing the chrystal today but i could not find the resistor on the schematic
can you help me, where is the resistance you mentioned?

[Traptor]

I replaced the quartz but nothing changed.

[anikin73]

You need an oscilloscope to check whether bios is reading …