[SOLVED] how to deal with a 12v short on 8 pin pcie connector

[Rajaken]

Hi there,

I've bought a used aorus 1080 ti waterforce extreme as defect really cheap on ebay and am trying to fix it. Error according to seller was, that the entire PC wouldnt turn on, once the GPU was plugged in.
Haven't tried it out so far, since I dont want to fry the other parts in my PC and thought about checking the different resistances. Looks all good except for a 2 12v Pins on the second 8 pin Power connector, which are shorted to ground. Since no other Rails are short and all measured resistances seem fine, I'm not sure whether it would work to just not use the second PCIe Connector or only connect the single working 12v rail on this connector and undervolting the gpu, or is there a way of repairing this short, since it is not on all 12 v rails?

thanks in advance

for some reason I cant insert the image here (says something went wrong)
Link (imgur):

https://imgur.com/00VacVG

View: https://imgur.com/00VacVG

both pins are marked in the image

 

[Lutfij]

Welcome to the forums, newcomer!

If the pins are shorting to ground, you might want to inspect the entire PCB of the GPU to see if there's any trace or contact or even a component that's causing the short. mind you, you will need a microscope like this;

View: https://youtu.be/ij9hBTllMxM
following that, you're going to need a multimeter and soldering gear.

Judging from how you've made this post, you don't have a clue about soldering and as such, you might want to take the card into a certified repair shop who can identify the short on the PCB.

If you don't know what you're doing, then it's very likely that you will ruin something that could've been easily fixed(by a skilled pair of hands).

 

[Rajaken]

ok thanks, I don't yet have a microscope for that but I found a mosfet, which I'm pretty sure is dead (looks a bit burned). I think I will change the mosfet as soon as I get a hotair soldering station.

I actually have some soldering experience, just not with gpus and I don't know of any certified repair shops near me.

I found a video with the exact same GPU model and same error which shows a fix.