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Did I just short my GPU?

post #1 of 5
Thread Starter 
I was using my R9 390 under water and since I had the RX 480, I was wanting to see how far I could push it under water. I'm using a universal GPU block. I put it on the RX 480 and then used the screws and bolts to hold it down. Now the bolts did touch the PCB of the GPU. However, I didn't think that would be a problem. I then switched the computer on but never got a display. The computer works with the R9 390 but not with theRX 480. Did i just short the RX 480 cause the bolts were touching the PCB?
Kukumonster
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A pleasant surprise :)
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Kukumonster
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A pleasant surprise :)
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post #2 of 5
Pics? Bolts touching a piece of PCB doesn't exactly mean there was any kind of short, but there is no way to be certain if the bolts are or aren't causing a problem without visual confirmation.

Generally you would want some sort of gasket or washer between the PCB and bolts to avoid the bolts damaging the PBC when tightening and loosening them. Realistically, even if you did dig the bolts into the ground plane, I don't think that alone would cause an issue unless it was in direct contact with another component that had a different electrical charge to it.

One thing you could try and look at when booting is the keyboard. Generally if the computer is making it to POST you will see the keyboard indicator lights (caps, scroll, number lock) will flash and perhaps turn on the number lock light depending on your BIOS settings. If this is happening then perhaps there is an issue occurring outside of the computer itself. Plugging into the wrong output, loose connection between the cable and the monitor, or something else along those lines could disrupt the video signal.

If it is not actually getting to POST then there maybe be another issue. Making sure to reseat the card and all of the power connectors would be a good place to start. Also check the motherboard power connections to be certain they are secured down. If any of these came loose then it would starve the machine of power, causing boot issues. If none of this works out then try going back to the old card. If the machine boots up fine with only a change in video card then that is where the problem is at.

I had mounted the heatsink to my HTPC with bolts and no gaskets or washers when I first got it. A few months later when I had the machine down I took it apart and added in some o-rings to isolate the bolts from the motherboard to avoid them digging into the PCB. The computer works perfectly fine. It's hard to say for certain, but if you were careful with the assembly then it probably didn't do any damage. Some o-rings, nylon washers, or even pieces of paper/cardboard gaskets can be used to avoid damaging the PCB.

Are there any other symptoms going on? Does it power on for a few seconds and then power down? It's possible that the card was not functioning to begin with. If there isn't any physical damage to the PCB then I don't see how the bolts could have caused the problem.
post #3 of 5
Thread Starter 
Quote:
Originally Posted by Kleer Kut View Post

Pics? Bolts touching a piece of PCB doesn't exactly mean there was any kind of short, but there is no way to be certain if the bolts are or aren't causing a problem without visual confirmation.

Generally you would want some sort of gasket or washer between the PCB and bolts to avoid the bolts damaging the PBC when tightening and loosening them. Realistically, even if you did dig the bolts into the ground plane, I don't think that alone would cause an issue unless it was in direct contact with another component that had a different electrical charge to it.

One thing you could try and look at when booting is the keyboard. Generally if the computer is making it to POST you will see the keyboard indicator lights (caps, scroll, number lock) will flash and perhaps turn on the number lock light depending on your BIOS settings. If this is happening then perhaps there is an issue occurring outside of the computer itself. Plugging into the wrong output, loose connection between the cable and the monitor, or something else along those lines could disrupt the video signal.

If it is not actually getting to POST then there maybe be another issue. Making sure to reseat the card and all of the power connectors would be a good place to start. Also check the motherboard power connections to be certain they are secured down. If any of these came loose then it would starve the machine of power, causing boot issues. If none of this works out then try going back to the old card. If the machine boots up fine with only a change in video card then that is where the problem is at.

I had mounted the heatsink to my HTPC with bolts and no gaskets or washers when I first got it. A few months later when I had the machine down I took it apart and added in some o-rings to isolate the bolts from the motherboard to avoid them digging into the PCB. The computer works perfectly fine. It's hard to say for certain, but if you were careful with the assembly then it probably didn't do any damage. Some o-rings, nylon washers, or even pieces of paper/cardboard gaskets can be used to avoid damaging the PCB.

Are there any other symptoms going on? Does it power on for a few seconds and then power down? It's possible that the card was not functioning to begin with. If there isn't any physical damage to the PCB then I don't see how the bolts could have caused the problem.

The fan isn't spinning and the card worked fine with the stock heatsink. frown.gif
Kukumonster
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A pleasant surprise :)
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Kukumonster
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A pleasant surprise :)
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post #4 of 5
Have you tried putting the stock heatsink back on? Also, if you have a program that is saving your overclocks, you may have gone past the limits of the card and your PC is trying to load up an overclock it cannot support.
    
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post #5 of 5
Thread Starter 
I've tried the stock heatsink and windows doesn't detect the GPU even with the R9 390 in along with the RX 480.
Kukumonster
(13 items)
 
A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
Amd Athlon II X3 435
CPUMotherboardGraphicsRAM
Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
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Cooler Master USP100 Black Edition 
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Kukumonster
(13 items)
 
A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
Amd Athlon II X3 435
CPUMotherboardGraphicsRAM
Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
Kingston HyperX Fury 240GB  WD Blue 1TB Seagate Barracuda 500GB Noctua NH-C14S 
CoolingOSMonitorPower
Noctua NF-A140*2 Windows 10 Pro (TP) LG 22" 1080p  Seasonic G-550 F3 550W 
Case
Cooler Master USP100 Black Edition 
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