J
JJD
Guest
I have several questions about the 'safe way' to open up and fiddle
around with a computer.
My computer user's manual lists these steps:
1. Turn computer off.
2. Wear grounding wrist strap and attach to metal chassis.
3. Touch bare metal surface on back of computer.
4. Unplug the computer's power cord.
I understand that any static charge on me would be pulled to ground in
step 2 but do I then just touch the bare metal momentarily or do I
have to hold on to it throughout (step 3), and if I do would that not
defeat the purpose of step 2?
Also when I unplug the computer's power cord, if say I am shifting
over a floor or whatever, and build up some static charge, it will
discharge into the metal chassis, but then what? The metal chassis
will then be charged, what "bank" will hold the chrage before it is
pulled to ground when I plug the cord back in? And what happens if I
do not plug it back in for some time after taking off the wrist strap?
Will the chassis stay charged, or bleed off how?
Also I heard that I can leave the power cord plugged in but turn off
the machine using a switch in the back, isolating any circuits within,
some PSU do not have this switch though. Anyway please answer the long
questions above.
tia
around with a computer.
My computer user's manual lists these steps:
1. Turn computer off.
2. Wear grounding wrist strap and attach to metal chassis.
3. Touch bare metal surface on back of computer.
4. Unplug the computer's power cord.
I understand that any static charge on me would be pulled to ground in
step 2 but do I then just touch the bare metal momentarily or do I
have to hold on to it throughout (step 3), and if I do would that not
defeat the purpose of step 2?
Also when I unplug the computer's power cord, if say I am shifting
over a floor or whatever, and build up some static charge, it will
discharge into the metal chassis, but then what? The metal chassis
will then be charged, what "bank" will hold the chrage before it is
pulled to ground when I plug the cord back in? And what happens if I
do not plug it back in for some time after taking off the wrist strap?
Will the chassis stay charged, or bleed off how?
Also I heard that I can leave the power cord plugged in but turn off
the machine using a switch in the back, isolating any circuits within,
some PSU do not have this switch though. Anyway please answer the long
questions above.
tia