Short circuit in my pc

gm-madi

Respectable
Nov 26, 2017
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Built my pc recently and noticed a small electricity hit me when i touch my pc case, motherboard, gpu or any metal. Either while running or just shutdown and plagued to house electricity.

First i ignored it because my pc used to work fine for a month but today it refuses to boot, everything lights up, gpu, ram, motherboard and cpu fan is runing faster, but it refuses to boot.

I figured out that the PSU is making that electricity hit.
The problem is that its not booting at all. Am wondering if any component is damaged ?

Please help
 
Solution
Everything you've described is connected to ground. Your MB is grounded to your chassi. Your PSU guts are grounded to the PSU case. Your GPU heatsink is grounded to the card which is grounded to the MB through the PCI slot and through its ancillary power cable(s). All of these grounds connect together and ultimately should be grounded through the 3rd prong of the power cord you plug into the wall. From there it finds true ground somewhere outside your house. You probably have a copper rod in the dirt under your breaker box. When you get shocked, that charge is using your body to find ground. This either means you have a bad ground on the wall outlet, or enough energy and resistance in the system to take advantage of alternate routes to...

Neur0nauT

Admirable
Have you tired bread-boarding the platform? i.e. Removing the motherboard and components out of the case and testing it?

See this guide for some pointers....http://www.tomshardware.co.uk/faq/id-2176482/breadboarding-stripping-basics-troubleshooting.html
 

gm-madi

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Nov 26, 2017
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Yes i thought it was the old metal case, i removed everything out and reassemble, onece i plagued power cable everything became chrged and electrical,
Even the pins on the Mobo or the heatsink of the gpu hits me.

Am afraid something is damaged
 

smashjohn

Reputable
Aug 14, 2017
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The two most common shorts I see are:

1) extra standoffs under the motherboard. -Remove the motherboard and make sure every standoff lines up with a mounting hole in the motherboard.
2) an internally shorted PSU. -Remove the PSU from the case and test or try a different PSU entirely.
 

gm-madi

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Nov 26, 2017
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The psu is 100% the problem, i will test another one and see... but my question is there any chance my components are damaged ? You can see the list in my signature.
Please explain how can they be safe in this situation, i can't stand the idea of something damaged
 

smashjohn

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Aug 14, 2017
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Hard to say until you test another PSU, but your PSU and case are grounded together. So a short in the PSU to ground can energize your case. In general, this is a protective measure to keep your components from getting fried. I mean, it's not meant to energize your case, but it is meant to provide shorts with a path to ground that doesn't run through other components.. I'm guessing your components are fine.

Also, double check your outlet and power cord to make sure you're PSU is properly grounded to the wall. You might want to use a tester is you're not sure about how the wall outlet is wired.
 

gm-madi

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Nov 26, 2017
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I tested my monitor power cable on the psu and same thing. Hits like raiden
But how can the problem be from the psu and it still running ?
Also pc used to run normally with same condition, doesnt this mean mobo is tired and got damaged ?
 

smashjohn

Reputable
Aug 14, 2017
574
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Everything you've described is connected to ground. Your MB is grounded to your chassi. Your PSU guts are grounded to the PSU case. Your GPU heatsink is grounded to the card which is grounded to the MB through the PCI slot and through its ancillary power cable(s). All of these grounds connect together and ultimately should be grounded through the 3rd prong of the power cord you plug into the wall. From there it finds true ground somewhere outside your house. You probably have a copper rod in the dirt under your breaker box. When you get shocked, that charge is using your body to find ground. This either means you have a bad ground on the wall outlet, or enough energy and resistance in the system to take advantage of alternate routes to ground.

You won't know how well your system is survived until you connect a psu that isn't shorted and test. But it's a huge plus if you don't smell burning :)
 
Solution

gm-madi

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Nov 26, 2017
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I like smashjonh details, the first thing am gonna do is find and try with different psu then judge, hoping nothing got fried.
Someone told me the psu and motherboad technologie are safe for such accidents, the psu will receive all dmg and the mobo will not boot in case of bad voltage. Hope its true.
Probably tomorrow and i will update news.
 

gm-madi

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Nov 26, 2017
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Since th psu is faulty, is there any chance that my system technologie agains such situationq refuses to boot because it detected a bad electricity, means my components are safe ?
 

DSzymborski

Curmudgeon Pursuivant
Moderator


Speculating is pointless. Until you have a new PSU to test, there's no useful information you can obtain about your other parts without testing them in a different PC.
 

gm-madi

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Nov 26, 2017
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SOLUTION
another funny story, after i tried everything and suspected my PSU is shorting my PC and afraid to cause damage, looks like BIOS is faulty, i took it to a technical house thinking something is broken, he just removed the Battery and did BIOS jumper and PC is working fine.

about the electricity hitting me: all time i was feet naked and my house electricity installation is not grounded so thats why i was taking hits.
if i wear something on my feet, everything is safe. Stupid situation but a good lesson.

thank you everyone for responding.
 

gm-madi

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Nov 26, 2017
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where i live, none use Grounding :p but small accidents are mortal, like when you are feet naked in summer and open the fridge or touch the TV.
rare to happen but still dangerous