mild shock when tuched the video card from the back

[Bekhit]

hi ..i touched the video card while its running its in the edges of the backblapte it gaves me mild shock ..while touching it from the middle doesn't shock..
anyway the pc runs ok but i want make sure ..would be any HARM in the future or anything i could do ?

 

[clutchc]

You'll have to determine if it is a voltage leak from the PC, PSU, or even an improperly grounded wall outlet... or if it is ESD from walking across the carpet.
If you suspect the wall outlet may be the issue, and you live in the US, pick up one of these testers and check the outlet. If the outlet tests OK, move on to the PC itself next. More likely the PSU has a component leaking to ground. Or a low voltage bare wire is touching the case.

 

[Bekhit]

You'll have to determine if it is a voltage leak from the PC, PSU, or even an improperly grounded wall outlet... or if it is ESD from walking across the carpet.
If you suspect the wall outlet may be the issue, and you live in the US, pick up one of these testers and check the outlet. If the outlet tests OK, move on to the PC itself next. More likely the PSU has a component leaking to ground. Or a low voltage bare wire is touching the case.

sorry, but why you mentioned the PSU ? i touched the edge of the backplate of the GPU ..and i felt a mild shock( btw i always feel this shock when touching electronic objects) i m just worrying this time coz i heard about static problems and stuff ...also i doubt the PSU would leak something its protected wires ..

note: the area i touched is the edge of backplate where part of the Heatsink is visible ..so i might have touched this area (heatsink-backplate) ...i really don't see any problem atm everything runs fine ..just worried in the future !?
Thanks,

 

[clutchc]

Because the PSU is what is providing the various voltages to the PC. The PSU has line voltage in it as well as low voltage. 120V in the US and 240V Euro.

But yes, it could be the card too. Although the highest voltage anything in the system has is 12 volts DC. Hardly enough to feel unless a component in the PSU was leaking. That is why I suspect the PSU or wall outlet first or static electricity (ESD). If you touch it and get zapped, and touch it again and get nothing, it is likely ESD. If it doesn't go away, it is likely from the power source.

 

[Bekhit]

Because the PSU is what is providing the various voltages to the PC. The PSU has line voltage in it as well as low voltage. 120V in the US and 240V Euro.

But yes, it could be the card too. Although the highest voltage anything in the system has is 12 volts DC. Hardly enough to feel unless a component in the PSU was leaking. That is why I suspect the PSU or wall outlet first or static electricity (ESD). If you touch it and get zapped, and touch it again and get nothing, it is likely ESD. If it doesn't go away, it is likely from the power source.

Yes, the area i touched is the edge of the backplate i touched it twice and it always zapp ..while i touched the middle of the backplate no zapp at all i also wounderd how come its ESD ? doesn't GPU's backplate actually prevent it ?

anyway if it wasn't ESD ..should i even be worried ?

 

[clutchc]

Yes, ESD is very worrisome. There can be several thousand volts in a static shock. Enough to fry any component in the PC. But you said it doesn't go away when you re-touch it immediately after the first shock. That would indicate it isn't ESD. That would indicate it was from the power source. That's why I suggested that you test the outlet first with the inexpensive tester I showed you*. If that proves all is properly wired, then the PC itself is the problem. Most likely the PSU. But it could be another component as well.

* if your electrical system uses a different style outlet, let me know. There are testers for just about any country's style outlets.

 

[Bekhit]

Yes, ESD is very worrisome. There can be several thousand volts in a static shock. Enough to fry any component in the PC. But you said it doesn't go away when you re-touch it immediately after the first shock. That would indicate it isn't ESD. That would indicate it was from the power source. That's why I suggested that you test the outlet first with the inexpensive tester I showed you*. If that proves all is properly wired, then the PC itself is the problem. Most likely the PSU. But it could be another component as well.

* if your electrical system uses a different style outlet, let me know. There are testers for just about any country's style outlets.

well my PSU is good quality its ( SeaSonic S12II Bronze 620W 80 PLUS Certified PSU )
but let me note somethings to you ..the PSU Cable is somehow close to the area i zapped in the GPU.

my GPU in idle is between 46-50 c ..while i read it should be 30c ..don't know if this might be related ?

for my outlet ..what should i test it for ?
Thanks,

 

[clutchc]

For some reason the link I put in the reply above is mssing. Oh well, maybe I forgot to add it. At any rate, here is the tester I suggested: http://www.amazon.com/GE-3-Wire-Receptacle-Tester-50542/dp/B002LZTKIA
It will test for conditions indicated on the label. Easy to use. Plug it in the receptacle you use for the PC, and read the combination of lights.

 

[Bekhit]

For some reason the link I put in the reply above is mssing. Oh well, maybe I forgot to add it. At any rate, here is the tester I suggested: http://www.amazon.com/GE-3-Wire-Receptacle-Tester-50542/dp/B002LZTKIA
It will test for conditions indicated on the label. Easy to use. Plug it in the receptacle you use for the PC, and read the combination of lights.

im not from the US ..i dont think i could find this in my country ..its Outlet tester right ? I can search in here from this point ..btw my outlet looks like this : http://www7.0zz0.com/2015/10/22/05/218484324.png
and of course i use electrical Multi-Outlet

 

[clutchc]

Ah. I don't see any ground (earth) on that outlet. What voltage is it?

 

[Bekhit]

Ah. I don't see any ground (earth) on that outlet. What voltage is it?

i didn't test it but its known that all outlet in my country are 220 volt
you think i should ignore this problem ?

 

[clutchc]

Ah. I don't see any ground (earth) on that outlet. What voltage is it?

i didn't test it but its known that all outlet in my country are 220 volt
you think i should ignore this problem ?

Being a retired electrician, I hesitate to tell you that.
1) Do you have something grounded nearby that you can run a wire from your case to that object?
2) Do you have a voltmeter you can use?

 

[Bekhit]

Yes , my rauter is connected to the same outlet (the outlet has two sockets one for telephone wire and other for computer)
and yes i have voltmeter ..

 

[clutchc]

Yes , my rauter is connected to the same outlet (the outlet has two sockets one for telephone wire and other for computer)
and yes i have voltmeter ..

Use the voltmeter and check what voltage you get between the part of the case/card in question and some (earth) grounded piece of metal nearby. But if your PC is plugged into an un-earthed* (ungrounded) receptacle, I can imagine all sorts of problems arising.

*Unearthed and ungrounded mean the same thing. Just different terminology in different parts of the world.