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Electric shock thru USB ports in desktop cabinet ?!?

10 posts · originally from https://geek.digit.in/community/threads/electric-shock-thru-usb-ports-in-desktop-cabinet.164331/

J
Jakejaves Original post #1
Oct 6, 2012 at 11:33 AM
I just bought a new
computer....i get electrocuted
a bit when I touch or connect
a steel pendrive...i thought it
might be hardware
issues....but When I turned on
the computer thru the
UPS ..there was no shock or
leAkage of electricity..okay
now the question is is this
due to improper earthing or
my computers fault ? plz help
its my brand new pc!
Desmond
Desmond #2
Oct 6, 2012 at 11:50 AM
Definitely earthing. Check your house power box.

Or get an electrician to do it.
d6bmg
d6bmg #3
Oct 6, 2012 at 12:26 PM
Earthing problem.
220V is coming through the earthing/ground post which should be 0V.
Contact your electrician ASAP to prevent much more devastating accident in you house.
J
Jix #4
Oct 6, 2012 at 4:31 PM
Its simply because of improper Earthing .

If your spike guard has Earthing indicator you can simply see that there is no earthing.

Just connect your device to a three pin socket where there is proper earthing and you will have your problem solved.
J
Jakejaves #5
Oct 6, 2012 at 6:50 PM
Jix said:
Its simply because of improper Earthing .

If your spike guard has Earthing indicator you can simply see that there is no earthing.

Just connect your device to a three pin socket where there is proper earthing and you will have your problem solved.
Click to expand...

Thank you all for confirming it... The electrician is on his way...
R
rajnusker #6
Oct 6, 2012 at 7:58 PM
Earthing problem, not a hardware issue. I too face this problem.
R
ranjan2001 #7
Oct 9, 2012 at 6:21 PM
I have lived in 3 houses & all had this issue with my computer & no electrician found any earthing issue, present house I asked a through check but electrician team reports all normal but usb shocks even now if I am bare foot otherwise not.

Their checking method is to put on end of multimeter in earth & another in positive the meter does not show any current.
Is this the right method?
d6bmg
d6bmg #8
Oct 9, 2012 at 8:51 PM
^^ Try to see the voltage differnece instead of measuring current.
aloodum
aloodum #9
Oct 9, 2012 at 9:40 PM
Do you use one of those multi port circuit boards/surge guard board? If yes do observe the internal /take it to an electrician and verify if the earthing cable is still intact and in contact with all the ground pins on the board.

Cheers!
F
frankeric #10
Oct 20, 2012 at 11:19 AM
Jakejaves said:
I just bought a new
computer....i get electrocuted
a bit when I touch or connect
a steel pendrive...i thought it
might be hardware
issues....but When I turned on
the computer thru the
UPS ..there was no shock or
leAkage of electricity..okay
now the question is is this
due to improper earthing or
my computers fault ? plz help
its my brand new pc!
Click to expand...

Hi this prob also caused if some component is earthing inside you pc atleast for once check you pc.