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Shocked touching case?

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Name: Comp01
Date: August 8, 2007 at 19:19:14 Pacific
OS: Windows XP Pro, SP2
CPU/Ram: 3.0Ghz Celeron/1024MB
Product: Me.
Comment:

I recently swapped my PSU into another system, and even if I don't have it plugged into the power outlet i get shocked touching the case, and and this even happens with the psu unplugged from the wall and nothing plugged into it inside the system, what could be the problem?



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Response Number 1
Name: Comp01
Date: August 8, 2007 at 19:20:32 Pacific
Reply:

Also for some reason it doesn't seem to happen in the system it was in...


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Response Number 2
Name: Comp01
Date: August 8, 2007 at 19:32:27 Pacific
Reply:

Bump, any help please?


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Response Number 3
Name: XpUser
Date: August 8, 2007 at 19:56:05 Pacific
Reply:

The problem is that the PSU capacitors hasn't been drained even when its unplugged. You should have pressed the power-on button to fully discharge the capacitors. More info here...

http://en.wikipedia.org/wiki/Comput...

i_Xp/VistaUser


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Response Number 4
Name: Comp01
Date: August 8, 2007 at 20:11:24 Pacific
Reply:

Yes, I understand that, but why would my case be shocking me? It just doesn't make sense


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Response Number 5
Name: Comp01
Date: August 8, 2007 at 20:25:45 Pacific
Reply:

Well i noticed I still had the monitor plugged into the surge protector and into the system (even the times I had the PSU unplugged), after trying a different outlet I don't seem to have the prob anymore, still though if it pops up again any possible causes/answers please?


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Response Number 6
Name: jam
Date: August 8, 2007 at 21:15:25 Pacific
Reply:

Impatient, aren't you? You can't bump in these forums.

You might get an answer if you explain more clearly.


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Response Number 7
Name: Comp01
Date: August 8, 2007 at 21:28:47 Pacific
Reply:

Ah, sorry to seem impatient just concerned/looking for an answer, basically, anytime I touch a metal part of the case i get shocked, its not static (its persistent) no wires are cut/frayed, the board is seated properly on the standoffs and it even does it whenn the system psu has no cord connected and nothing hooked into it (mobo, drives, etc, nothing connected) but it only happens when mounted inside the case..


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Response Number 8
Name: DAVEINCAPS
Date: August 8, 2007 at 21:36:30 Pacific
Reply:

Likely then the current leakage is from the monitor. The monitor cable shield is connected to the case. If current coming through the cable isn't going where it's supposed to then when you touch the case you're providing the path to ground. Could be a problem with the monitor, monitor cable or even the video card, as they're all in the circuit. It could also be a grounding problem with the monitor power. You might want to get one of these:

http://www.homedepot.com/webapp/wcs...

Radio shack and electrical/electronic supply houses should carry them too. Then test the power strip sockets as well as its wall socket.

If nothing definite turns up just replace the power strip and power cables to the monitor and PC.


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Response Number 9
Name: jam
Date: August 9, 2007 at 14:49:03 Pacific
Reply:

This is a longshot, but could it be that the screws you used to mount the PSU into the case are too long & they're making contact with something inside the PSU?


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Response Number 10
Name: CMWGT
Date: August 10, 2007 at 16:29:03 Pacific
Reply:

+1 on the ground fault indicator tool. I was going to suggest a grounding problem - as electric shocks should NOT happen, if all attached devices are grounded properly.

In other words.... Make sure you're plugging your devices into a 3-pronged outlet. And NEVER, NEVER cut off that 3rd prong!!! That 3rd prong essentially attaches to your computer's case and is the path of least resistance. In a shock scenario, with a properly-grounded system, the electricity should go through that ground and blow your home's breaker, before going through you.


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