Posted by MarkB_MI on December 28, 2014 at 04:17:44 from (70.194.8.161):
In Reply to: Re: computer cleaning posted by OldBuzzard on December 27, 2014 at 20:39:25:
>That is a danged good say to ruin a computer.
>The static charge built up by the air flowing through the tube can easily fry any number of components.
>Compressed air is the only safe way.
Perhaps. I'm quite familiar with the dangers of electrostatic discharge, having worked with electronics for years. But as long as the computer is plugged into a properly grounded outlet, the risk of ESD is fairly low. The case and motherboard ground plane will be grounded, as will the devices you're likely to touch. The vacuum hose itself will be grounded through your body as long as you're touching the computer case.
Consider the ESD risks with compressed air: If you're using a can of compressed air, it's going to be at whatever potential your body is at, which could be several thousand volts if you've just walked across the carpet. Of course, once you touch the computer case that potential goes to zero, which is why you should never work on your PC if it's not plugged into the wall, and you should always discharge yourself on the computer case. (Wearing a grounded wrist strap is of course the best solution, but most folks don't have one.)
If you use shop compressed air, are you really certain your air hose doesn't carry a static charge? Did you make sure and ground your PC when you put it on the work bench?
ESD is a very real risk, regardless of whether you use compressed air or a vacuum. I prefer to vacuum because blowing air into a dirty PC makes a big mess.
This post was edited by MarkB_MI at 04:27:34 12/28/14.
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