Fried gpu, question

vladann93

Commendable
May 11, 2016
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0
1,510
So I bought a used asus r9 290, it worked fine for sometime, then some wired smell filled the room. No post.
I open it up, find the followong,
http://imgur.com/a/USfii

2 burned resistors.

But then I look around more and find this, http://imgur.com/a/oUhwL
This pin is missing on my gpu...

Is there anyone here who would know if the missing pin cause this issue, mind you it worked for like two weeks and it was under full load alot, with normal temps..

Also I've looked around quite a bit but cant find a schematic for it or component list so I can find the value of the resistors.

Thank you anyone for helping
 
Solution
Can you tell us if your PCB is damaged though? If it is, then you are pretty much on your own and you'll have to RMA or buy another one. If not, you can get the values from other resistors.

vladann93

Commendable
May 11, 2016
6
0
1,510


Thanks for your reply, I never understood why they split the power in 3 and the ground to 5 wires, I always assumed they go to different things within the gpu itself.

But I just checked, The missing pin is actually a ground pin, I thought it was power too... Why do you think anyone would remove it..... I cant wrap my head around this..

edit: Also regarding your power surge theory, If that was the cause wouldn't the psu been damaged too? And also in that machine I had 4 gpus running, the psu and other 3 gpus are fine, everything is still going with no problems.
 

nooneisback

Distinguished
Jun 14, 2014
555
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There are more ground pins to take away excessive power in case a surge happens. All other components also have them, try using the paper clip trick on the PSU, you'll notice that you can use any ground pin. In your case, the GPU lacked one of the pins so the damage couldn't have been prevented.
 

vladann93

Commendable
May 11, 2016
6
0
1,510


So it was the missing pin that caused it... is there even a reason for someone to remove it, I dont even understand how they got it out of there... Here I took another pic, http://imgur.com/a/c4DHp
All the outer ones appear to have not been touched.

So what would you recommend I do about this, do you maybe know where I could find a schematic or a component list for the resistor problem?

As for the pin, I could just short the missing pin with a working one and that would do the trick correct? Like this http://imgur.com/a/sS5hg or am I wrong here?

Thanks again for helping me out :)
 

nooneisback

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Jun 14, 2014
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Looks like a manufacturing fail. If you have the warranty, take it back; if you don't, I'll keep ny fingers crossed and hope that nothing else got damaged, like the PCB connections, or the memory.

For the pin, there isn't much you can do, of course you could try connecting the two pins, but that wouldn't do much. The current will get bottlenecked because they are both connected to a single small metal rod. Get the broken part, solder it, if the memory chip is burnt, try ordering one and solder it with a hot gun, yet I can't promise that it'll solve anything.
 

vladann93

Commendable
May 11, 2016
6
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1,510


Ye, id be able to fix it I think I just dont know how to identify the components and where to get them..
 

nooneisback

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Jun 14, 2014
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The chips have their serials written on them, while I have no idea how to get the transistors' values, they are probably mentioned somewhere. If you can't find them, send an email to the support explaining your situation, and ask for the values, they will gladly give them to you.
 


No-one would remove it, it probably broke off. Either it was sold that way to you, or it broke during installation or when you removed the power to check it. See if it's stuck in your power plug.
 

nooneisback

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Jun 14, 2014
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It physically can't end up stuck on the power connector. Firstly because the connector itself holds onto the plastic surrounding. Secondly, because how is it supposed to rip the thing out of its place? I tried to do that once on an old GPU (my GT 9800's plastic got molten), its hard with tools, impossible with bare hands, and I'm not talking about disconnecting it from the PCB, I actually mean taking it out of the plastic.
 

vladann93

Commendable
May 11, 2016
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1,510
Here look at this pic http://imgur.com/X5HYQdj, it was definitely de soldered, if which case i have no idea how they managed not to damage the plastic connector. Or just a mistake in production which i dont think is the case honestly,,,

I also contacted assus support, they said its not worth it for me to send it to them for repairs as it would cost way too much. And they dont want to send me the damaged components id/component list, or the schematic...

So I have no idea what to do now.