Gtx 1080 Barely dead..

[dani_gv]

Hello everybody, I was searching google a especialist electronics forum and here i am!
First of all i have to introduce myself, I live in a little country of Spain with no knowledge of repair this tipe of electronics.
I`ve been repairing smartphones since 2 years, and i have a microscope,soldering station, reballing machine, and many many tools for repairing phones, but with gpu.. i have no idea to begin the repair, is this why i became here.


One friend sent me a 1080 he bought from ebay, it was working flawlessly, but he changed his mind and put an aftermarket heat sink, the result.... No video. He was afraid and he had removed the aftermarket heatsink broken one inductor since the small heatsinks where applied with glue.
I soldered that inductor, see image:


After this no video output. The card was recognized by windows as a 1080 GTX when connected as a secondary gpu, but when i install the driver ive got no video from my primary gpu.
How i can start to diagnose the card? I cant see any burnt or fault in any component on the pcb. Anyone have a idea to begin?
Thank you!





Edit, added a photo of the board.

[Rasz]

he changed his mind and put an aftermarket heat sink, the result.... No video

most likely cracked the chip itself, or solder under it
its garbage now

[stojke]

Nvidia are notorious for bad quality bumps (Joint between the microchip  silicon, gray thingy, and its carrier, green larger thingy) that burnout. It is a common case of bad bumps, be them the ones on the carrier or the ones on the silicon, when the system can run the card in VGA mode but looses it in driver operation mode.