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Case Shocking Me?

TheBlueChanell

TheBlueChanell

Supreme [H]ardness
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Apr 15, 2005
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I am my friends house, and everytime I touch his case, It shocks me. It's an aspire qpack, w/ a NeoHe 430. He said it happened yesterday too w/ the stock psu.
 
dang, that isnt a good sign. i would hate it to shock me alll the time i touch my computer. lol
i think it might be something wit the powersupply maybe? not sure.
 
If it's a quck zap when you touch it, but then you can continue to touch it after that... it its static electricity. Probably because you walked across carpet before you touched it.

If it shocks you when you touch it... and continues to do so as long as you are touching it... then it either has a bad PSU or the power outlet is miswired.
 
TheBlueChanell said:
I am my friends house, and everytime I touch his case, It shocks me. It's an aspire qpack, w/ a NeoHe 430. He said it happened yesterday too w/ the stock psu.
Click to expand...
Think of it as an anti-theft device :p
 
It sounds like a PSU problem. Power supplies are SUPPOSED to be checked for proper insulation. When this test is carried out sucessfully, they stamp or sticker it "hi pot ok" or something to that effect.

That is, if it isn't static. If it's static, you're just grounding yourself. Be glad the case shocked you prior to you touching any circuitry.
 
My vote is bad ground on the outlet. I have a perfectly fine PSU/case that used to be electrified at my old apartment, that stopped doing so when I moved here.
 
I had a friend that had a very bad static problem in his room. The weirdest story I heard about it was when he touched the metal on his desk, it gave him a shock, and then his computer turned off :eek:
 
Sometimes this can be a short inside the PSU (sometimes a live wire can get caught in between the two halves of the power supply housing and a little bit of insulation will rub off.) But if it happened with two power supplies (the Aspire and the Antec) I would tend to think the problem is more inside the case.

There may be something powered by the PSU that's grounded. Maybe even something as simple as the front USB. I'd disconnect things from the power supply until the current goes away. Start with the front USB, then Firewire, then any lights, fans that aren't plugged into the motherboard and then the drives.

If you're down to just the bare essentials and you still get shocked, pull the power supply out of the case and set it just next to the case, but not touching it. If the current is no longer going through the case, then your friend has two power supplies with a short to ground. :(
 
Frank4d said:
If it's a quck zap when you touch it, but then you can continue to touch it after that... it its static electricity. Probably because you walked across carpet before you touched it.
Click to expand...

Yup, same thing happens to me sometimes. It's called winter season and the heat in your house from your furnace or central air drops the humidity down below 30% and creates static electricity.

Go buy a humidifier and leave it on in your computer room to keep it around 40-50% humidity. ;)
 
I have a friend who's LCD seems to put some power into the case and cause little shocks when you touch the case. I looked at it and with the PSU unplugged from the wall it would still zap me.... uplug the LCD and no more zaping.
 
I also vote for bad ground because most PSUs have a couple of low-value capacitors wired between the lines and the PSU case ground, and if the case ground isn't connected to the household ground, they cause the case to ride at half the AC voltage. The capacitors are so small that the current is limited to a safe level, under 1mA, provided that no capacitor fails and shorts. :(
 
This brings back memories.

In Colorado, there was a place called Celebrity Fun Center. They had water slides and video games. But if you put a wet quarter in a video game, you'd get a real nice shock!!! :D

Try the PC with the PSU out of the case and see if you can duplicate the "shock."
 
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