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Static - How to discharge
- Thread starter progiciel
- Start date
I dont know how much that painted surface really matters (even though I touch the inner unpainted chassis at home at work we really are not that concerned with static unless dealing with memory or cpu's)
as long as you touch something metal(preferably the case) and you don't move around alot you should be fine.
never knew about touching a cats nose, but if you have a cat make sure to keep them in another room while working on the pc so that they dont run over the case while your working.
as long as you touch something metal(preferably the case) and you don't move around alot you should be fine.
never knew about touching a cats nose, but if you have a cat make sure to keep them in another room while working on the pc so that they dont run over the case while your working.
When you're working with the innards of the computer, it is usually wise to unplug the power cord. You can ground yourself just by touching the case (unplugged) because it will equalize the electricity between you and the computer. Once you are equalized with the computer, you can handle the components therein without any shocks happening.
I read somewhere that the next generation of motherboards are going to still provide power to the slots even when power is off. It is a good idea to get in the habit of unplugging it.
When you touch the metal case you are equalizing your body's ground to that of the case. I am not sure where the best place to touch is if you have a plastic case.
Yes, keep the cat in another room. They love batting at and chewing on all the dangling wires. Just like never bend over naked with the cat around... they love batting at dangling things.
It is also better not to work on a computer on carpeting. Carpeting generates static electricity.
The component that you need to be especially careful with is the memory. Static shocking your memory can create memory with undetectable errors that cause random lockups.
When you touch the metal case you are equalizing your body's ground to that of the case. I am not sure where the best place to touch is if you have a plastic case.
Yes, keep the cat in another room. They love batting at and chewing on all the dangling wires. Just like never bend over naked with the cat around... they love batting at dangling things.
It is also better not to work on a computer on carpeting. Carpeting generates static electricity.
The component that you need to be especially careful with is the memory. Static shocking your memory can create memory with undetectable errors that cause random lockups.
ehh I work on the pc's at work and at home on my carpeted floor, it is better if you can work on a wood or another surface but if all you have is carpet then you still can be ok just dont move around alot on the floor
also about that power cord thing, I have heard everything from powercord in the wall, power cord in the suge with the surge turned off, powercord just hanging on the floor, to no powercord at all. Personally I dont think it matters one bit, the first and foremost cncern is that the system does not get any power. personally I just unplug the powercord alltogether and have never noticed any difference.
yes new pc's get constant power that is why you either unplug them or you turn the ps off at the back if there is a switch.
most always on boards have a light built on them that signifies if they are still getting power or not
also about that power cord thing, I have heard everything from powercord in the wall, power cord in the suge with the surge turned off, powercord just hanging on the floor, to no powercord at all. Personally I dont think it matters one bit, the first and foremost cncern is that the system does not get any power. personally I just unplug the powercord alltogether and have never noticed any difference.
yes new pc's get constant power that is why you either unplug them or you turn the ps off at the back if there is a switch.
most always on boards have a light built on them that signifies if they are still getting power or not
You do NOT leave the computer plugged in, whether it's ATX (supply always stays on somewhat when plugged in) or AT, because what matters is the voltage between you and the equipment, not the voltage between you and earth ground. Being directly grounded to earth can be hazardous if you come in contact with exposed voltage, which is why anti-static wrist straps have a one megaohm resistor in series with their ground clip.
An anti-static wrist strap is the bet way to avoid damaging anything. The next best way is to work completely barefoot and keep a part of your body always in contact with some bare metal on the computer - the unplugged computer (includes any peripherals that work off AC).
An anti-static wrist strap is the bet way to avoid damaging anything. The next best way is to work completely barefoot and keep a part of your body always in contact with some bare metal on the computer - the unplugged computer (includes any peripherals that work off AC).
Syborg1211
Diamond Member
here's another idea, how about if you just touch the top of your processor. It has this surface that will take all the static electricity right out of you. just kidding. The metal parts of the case is just fine. And, shocking your computer is not too much of a big deal since i had this old computer and i wanted to break it and messed around with it. I never discharged and i only shocked it once out of a over 50 touches. Even then, nothing happened
Syborg1211, I have to disagree. It is a big deal. If it wasn't such a big deal there wouldn't be a need for people to take it seriously. At my last company they sent each person to an ESD class to remind us to be careful.
You can completely kill cards and chips with a static discharge, I know people who have done it. It was even more of a concern when computers had analog components, but it is still necessary to practice proper ESD care.
As I mentioned, memory is the worst in current machines because the only affect is the stability of your system unless you shock it bad enough.
You can completely kill cards and chips with a static discharge, I know people who have done it. It was even more of a concern when computers had analog components, but it is still necessary to practice proper ESD care.
As I mentioned, memory is the worst in current machines because the only affect is the stability of your system unless you shock it bad enough.
chiwawa626
Lifer
FOR BEST PROTECTION,
unplug the computer, and get a grounding wrist strap, the kind u can plug into the ground of a wall socket. then also, work on a anti static area like a mat or somthing. U can work on a metal desk , and actualy grround the whole desk if u want
unplug the computer, and get a grounding wrist strap, the kind u can plug into the ground of a wall socket. then also, work on a anti static area like a mat or somthing. U can work on a metal desk , and actualy grround the whole desk if u want
EmperorNero
Golden Member
what is a "grounded" object - like what makes it grounded? (something more like "it's plugged into an outlet" would be nice).
grounded - a conductor connected to the earth
Yeah, if you want to get really paranoid or anytime I work with a machine that costs more than $20K, I take a grounding mat place it on a table or non-carpeted floor (preferably a static disapating tile floor), plug it into the wall (the nice mats have a jack to ground them into a socket, with an LED to show that it is properly grounded), then take a wrist strap and plug it into the mat. If you are working on a system that is racked mounted, the rack should be grounded already, and instead of plugging the matt into the wall you attach the mat to the rack.
When working on expensive equipment you also want to wear either static disapating boots or grounding ankle straps on a static disapating surface.
At my last job where we worked with $5 million+ dollar machines we were required to where ankle straps or static disapating boots and we had to step on a machine and put our thumb against a metal button and the machine would tell us if we were sufficiently grounded.
Yeah, if you want to get really paranoid or anytime I work with a machine that costs more than $20K, I take a grounding mat place it on a table or non-carpeted floor (preferably a static disapating tile floor), plug it into the wall (the nice mats have a jack to ground them into a socket, with an LED to show that it is properly grounded), then take a wrist strap and plug it into the mat. If you are working on a system that is racked mounted, the rack should be grounded already, and instead of plugging the matt into the wall you attach the mat to the rack.
When working on expensive equipment you also want to wear either static disapating boots or grounding ankle straps on a static disapating surface.
At my last job where we worked with $5 million+ dollar machines we were required to where ankle straps or static disapating boots and we had to step on a machine and put our thumb against a metal button and the machine would tell us if we were sufficiently grounded.
Midnight Rambler
Diamond Member
dszd0g,
I have one of those mats to which you refer, and they are great to work on. Not only for the safety aspect, but they are just a nice surface to lay a mobo on when you are installing memory and/or CPU.
I have one of those mats to which you refer, and they are great to work on. Not only for the safety aspect, but they are just a nice surface to lay a mobo on when you are installing memory and/or CPU.
Here is something you may not realize, but after you unplug it from the power, and then you MUST press the power button on ATX to discharge the standby power that is held in a capacitor. IT takes about 20 minutes to discharge if you don't. That means there is still power in the board for 20 minutes.
I know of three ways:
1.Leave PC plugged in and use a wriststrap connected to the metal/case.
2.Wriststrap grounded through outlet.
3.chiwawa626's method.
<<When you're working with the innards of the computer, it is usually wise to unplug the power cord. You can ground yourself just by touching the case (unplugged) because it will equalize the electricity between you and the computer. Once you are equalized with the computer, you can handle the components therein without any shocks happening.>>
If you unplug the powercord, your PC is no longer grounded. So a strap connected to the case (or touching the case) is useless. The voltage running through your mainboard (after it is powered down) is not going to harm you, that is if you aren't doing something stupid. Sure you will be equalized for a second/minute but you will build a charge (especially in winter) if you move at all. You can get instant damage or residual damage from the smallest of shocks.
1.Leave PC plugged in and use a wriststrap connected to the metal/case.
2.Wriststrap grounded through outlet.
3.chiwawa626's method.
<<When you're working with the innards of the computer, it is usually wise to unplug the power cord. You can ground yourself just by touching the case (unplugged) because it will equalize the electricity between you and the computer. Once you are equalized with the computer, you can handle the components therein without any shocks happening.>>
If you unplug the powercord, your PC is no longer grounded. So a strap connected to the case (or touching the case) is useless. The voltage running through your mainboard (after it is powered down) is not going to harm you, that is if you aren't doing something stupid. Sure you will be equalized for a second/minute but you will build a charge (especially in winter) if you move at all. You can get instant damage or residual damage from the smallest of shocks.
Midnight Rambler
Diamond Member
Some motherboard makers are now putting an LED on the board to signal if there is power. Good idea.
Syborg1211: The metal top of the CPU is probably not at ground. It's safer to ground yourself by touching the metal around the keyboard, mouse, serial, or parallel port. If you see any rectangular or square metal containers on the motherboard, they house oscillators and are at ground.
EmperorNero: Ground is whatever the equipment wants as ground, and it won't necessarily be earth ground. To prevent static damage, you want to be at zero volts relative to the equipment's ground.
EmperorNero: Ground is whatever the equipment wants as ground, and it won't necessarily be earth ground. To prevent static damage, you want to be at zero volts relative to the equipment's ground.
Syborg1211
Diamond Member
apparently, you didn't realize how kidding i was. Jeez, loosen up
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