Author Topic: CDRW needed  (Read 1211 times)

Offline maxtor

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« Reply #30 on: January 15, 2003, 12:07:06 PM »
Never ever work inside your computer with the power cord plugged in.  ATX systems today  have a current energizing the mainboard - you WILL damage components if you go plugging and unplugging parts inside the case with this charge present.  BEware of outdated material in this regard - you can keep old AT style systems plugged in for a good ground, but it is a bad habit.

As to static electricity, as long as you and the computer are at the same charge state - everythign is cool.  If you are in contact with the metal of the case (preferrably the powersupply) you are in touch with the same ground the system board is using.   A wrist strap is correct to use, a good thing to use,  but not necessary.

Just be sure unplug the computer, and be sure you are grounding yourself to the system before you go handling parts inside (which you likely arleady have been, it is hard to handle a computer without touching the case first).

Offline AKDejaVu

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« Reply #31 on: January 15, 2003, 11:50:07 PM »
I've not had a static problem with a PC either.  I believe the systems are much more robust than they used to be and this has almost become a non issue.  I wouldn' suggest trying this with any other solid state components though.

I commented on Beetlle's post because it is a classic pic.  The "what not to do while building pc's".  The second post was finding the "it was plugged in" part equally as funny as it offers zero protection against static.

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Offline beet1e

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« Reply #32 on: January 16, 2003, 03:13:10 AM »
AKDV  I agree only with part of what you said. I agree entirely with Maxtor's post above, especially the part where he says
Quote
As to static electricity, as long as you and the computer are at the same charge state - everythign is cool. If you are in contact with the metal of the case (preferrably the powersupply) you are in touch with the same ground the system board is using.
During the assembly of the PC, I would have discharged any static on the way into the room by touching the heating radiator near the door (with my knuckle - fewer nerve endings than the fingertips!). Unfortunately, I still had to walk across the carpet to the dining table. So if there is any risk present, it's pretty much unavoidable, but small. Only when assembly was complete did I move it to the floor. And as Maxtor says, with the power cord plugged in at least, I would be at the same level of charge as the PC - none - assuming I'd just touched the radiator, and not had too much carpet to walk across.
Quote
The second post was finding the "it was plugged in" part equally as funny as it offers zero protection against static.
Either I disagree entirely, or I've misunderstood. With the PC plugged in, as Maxtor says the case is earthed (grounded) and as the mobo is screwed directly into the case on top of nine steel posts, the internal components are grounded too. If I had picked up any charge, and touched the case, said charge would have been dissipated through the earth. In British homes, the electrical installation is earthed to the plumbing. There's a big terminal attached to the water inlet under my kitchen sink with a green and yellow wire coming off it - that's what that is.

AKDV, I have a question about your PC power cord: Does the plug have 3 pins, or does it have only two? If it has only two (and I suspect that could be the case as many US electrical outlets have only two holes) then I understand your concern. Mine has 3, ensuring that static can never build up. :D

Maxtor - sound advice, although it's worth noting that British electrical outlets as well as always having an earth terminal, have a switch so that the electrical supply can be turned off without unplugging the appliance. Advice given here is to switch off at the mains, but leave the power cord plugged in so that the case is earthed, and static cannot build up, and work on the PC in that state. :eek: But I prefer to make sure everything is discharged, and unplug - even though the Asus mobo has a green power on LED.

Still, it was damp day yesterday, so perhaps all this discussion is moot!

Offline beet1e

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« Reply #33 on: January 16, 2003, 03:20:18 AM »
hehe, this thread started about a CDRW burner. I burnt a CD as a test of that TDK cyclone burner - soundtrack to "Night at the Roxbury". The read phase took about a minute, and the burn took only three minutes. :eek: I was impressed! Especially considering how little it cost.

Anyway, Sally the cleaning lady has taken the PC away now. We had to put the case on the floor of the back seat of her Vauxhall Frontera- on a c-c-c-carpet!

Offline SOB

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« Reply #34 on: January 16, 2003, 09:03:48 AM »
All standard us computer plugs are 3-prong, and unless the house is old, it will have grounded outlets as well.  However, how would the case be earth grounded through the outlet with an ATX power supply that doesn't have a ground wire lead attached to the case?  Honest question...I don't know.


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Offline beet1e

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« Reply #35 on: January 16, 2003, 10:18:33 AM »
SOB,
The earth terminal on the case would be connected to the body of the case somewhere, and the ATX power supply is screwed onto the earthed case, as is the mobo.

Offline AKDejaVu

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« Reply #36 on: January 16, 2003, 01:19:40 PM »
Beetle, please stop.  If you'd worked with real static sensitive devices before you'd understand why you wear a grounding strap around your wrist and clip it to the device you're working on while staning on an insulated non-conducting pad.

If you're case is grounded, and you touch the motherboard, you send the difference in potential through the motherboard to the ground.  It travels across the circuits of the motherboard.

If you keep standing on carpeting, you are standing on a surface that will constantly be at a different potential than any grounded object.  The only way to protect the device is if a strap is clipped to it, then around your wrist.

Also, NEVER WORK ON AN ENERGIZED DEVICE WITH TWO HANDS.  Once again, if you've worked on functioning electronic devices where they had to be powered up, you'd know why this is the case.

There is no condition where working on a PC while standing on carpeted surface could be considered electrostatically safe.

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Offline beet1e

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« Reply #37 on: January 16, 2003, 01:41:47 PM »
OK, AKDV - I've stopped. Thanks for your advice. YES - you make a good point about if I were charged up, and then touched the mobo - as you say that could be disastrous. But the precautions I have taken (above) have worked for me down the years. My house is carpeted throughout - except the kitchen, so I just have to take the risk!

Offline SOB

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« Reply #38 on: January 16, 2003, 04:15:55 PM »
You have carpet in your bathroom?  And I though only Rip was crazy enough to carpet his garage?!  :D


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