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my case has a current (hot)

S

s10010001

Supreme [H]ardness
Joined
Sep 17, 2002
Messages
7,505
I am sorta stumped here. My case is shocking me in some spots. Its a all metal case (Silverstone) This is not like a shock of static discharge, but a current like if you lick a 9v battery, just not that high of voltage, it fees like 3v or so. Its bizarre, I have never ran into this before.

So here is what I know:
-The outlet on the wall is right, grounded, I tested multiple outlets just to be safe on different circuits
-my other desktop does not have this problem
-Only some spots have the current, spots where the paint is not present like a fan grill, screw holts, or a scratch on the side, I found about 6 spots I can feel the current.
-The PSU case was socking me too
-I put my multimeter on it and im only able to read .01-.02v
-I cant find any damaged PSU wires
-the current was active when the PC was on or off, but not when the PSU is switched OFF in the back.

Weird part is the CPU heatsink shocks me too. I removed the board from the case and put it on my workbench. When I fire it up, the headsink is NOT charged.. The PSU is not charged either?

Im gonna go recheck for a bad wire, but really that would have shorted out the PC and not charged the case.

Im out of ideas, other than reassemble and see if it comes back? this PC is sorta old and its acting as my Plex server, I might just chuck it, my family doesn't use it anymore really. I could offload the little it is used for to others services or devices.

Specs:
silverstone tj08 case
Seasonic 380 PSU (80+, Active)
Intel DG45ID board
q6600@3.0
8gb
bunch of drives.
 
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So if further investigation I found one of the board screw holes it all scraped up from the scren and copper is reviled, so sure if this inner layer of the board getting grounded to the case is causing my problem.

Ill put it back in the case a bit later, im letting it move some data off since I was using a Windows 8.1 Storage Pool, and its my only 8.1 PC that can read the drives. My old Win7 server might come back to service soon hehe.
 
Well I put it all back together piece by piece, testing as I went. no more current...The only thing I changed was I skipped a board screw that was all jacked up on the board. I removed the standoff too. But when testing out of case that area had no charge.

weird.. must have been something touching, but I couldn't find it.
 
I think you should get a new motherboard. You are lucky your computer is still working fine. I wouldn't risk it again. Sounds like your motherboard is wearing out somehow. I would replace whatever you think is causing the problem because an electrical problem can very well fry your entire system.
 
The only voltages inside the system are 12v, 5v, and 3.3v, none of which can push enough current through your skin to feel it (9v battery on the tongue is a very different situation). Since you said the current was noticeable whether the system was on or off, that tells me you have mains current leaking into your grounding system, which could be coming from anywhere in the house. It could also be a cable TV or phone line isolation problem, as those can operate at pretty high voltages.
 
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