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macdemon
Sep 21, 2011, 05:49 AM
hi
when i connect my MBA 13 to the mains with magsafe and touch the laptop it gives a mild electric shock or vibrationor tingling sensation.
the laptop works fine
is it normal to have that?
thanks
:D



orfeas0
Sep 21, 2011, 06:14 AM
hi
when i connect my MBA 13 to the mains with magsafe and touch the laptop it gives a mild electric shock or vibrationor tingling sensation.
the laptop works fine
is it normal to have that?
thanks
:D

Depending on the surface it was on (happened on 2 different desks, thankfully not MY desks), my macbook pro would do that when you touched it. And not anywhere near the magsafe! Even when you were typing and your hands were on the edge of it, it would shock you! But again, only on a certain desk (material type).

ZipZap
Sep 21, 2011, 06:28 AM
Not normal EVER!

Take it in for repair.

macneubie
Sep 21, 2011, 06:34 AM
normal. why? depending on the wall outlet plug is a three pin(earthed) or two pin (unearthed) connected to the power brick, those antbite sensation means the chassis of the notebook isn't earthed.

happens to all electronic appliances that's ungrounded.

gyorpb
Sep 21, 2011, 06:45 AM
It's not MagSafe related; my PowerBook G4 did that, and my MacBook Air does it, too.

You'll grow to like it. ;)

.tsooJ

ZipZap
Sep 21, 2011, 06:47 AM
normal. why? depending on the wall outlet plug is a three pin(earthed) or two pin (unearthed) connected to the power brick, those antbite sensation means the chassis of the notebook isn't earthed.

happens to all electronic appliances that's ungrounded.

Forgot about you third world owners....sorry

macneubie
Sep 21, 2011, 06:54 AM
Forgot about you third world owners....sorry

why do u say that?

coopiklaani
Sep 21, 2011, 07:00 AM
Completely normal. This is due to lack of earth/ground of MagSafe adapters. Doesn't matter if you connect it to a 3 pins or 2 pins wall socket, it is only 2 connections that actually go into the adapter.

orfeas0
Sep 21, 2011, 07:02 AM
why do u say that?

For obvious trolling reasons:http://encyclopediadramatica.ch/Troll

macneubie
Sep 21, 2011, 07:05 AM
For obvious trolling reasons:http://encyclopediadramatica.ch/Troll

ok noted. shall not waste time on this daft who think he is first-world. :D

Kissaragi
Sep 21, 2011, 07:47 AM
My macbook pro used to do it when it was on a table, tho weirdly it seemed to improve after a few months.

macdemon
Sep 21, 2011, 07:51 AM
thank you all for your replies
i am much relieved
cheers!:D

macneubie
Sep 21, 2011, 09:26 AM
thank you all for your replies
i am much relieved
cheers!:D

try this test. while seated in your non-metallic chair, run your fingers on the AC-powered MBA (on your table) with & without ur bare feet touching the ground. the effect will be different.:D

gyorpb
Sep 21, 2011, 10:11 AM
Completely normal. This is due to lack of earth/ground of MagSafe adapters. Doesn't matter if you connect it to a 3 pins or 2 pins wall socket, it is only 2 connections that actually go into the adapter.MagSafe adapters are grounded, if used with the cable with the three-pronged plug. In fact, in any country with decent electrical standards, it is illegal to sell a device with a three-pronged plug unless it is actually grounded.

http://www.laptopbatteryinc.co.uk/images/Apple-MacBook-Magsafe-60W-AC-Adapter.jpg

See that metal "button" on the adapter itself? That's the ground lead that the three-pronged-plugged cable connects the ground pin to.

.tsooJ

coopiklaani
Sep 22, 2011, 02:35 PM
MagSafe adapters are grounded, if used with the cable with the three-pronged plug. In fact, in any country with decent electrical standards, it is illegal to sell a device with a three-pronged plug unless it is actually grounded.

Image (http://www.laptopbatteryinc.co.uk/images/Apple-MacBook-Magsafe-60W-AC-Adapter.jpg)

See that metal "button" on the adapter itself? That's the ground lead that the three-pronged-plugged cable connects the ground pin to.

.tsooJ

Yeah, but it's missing the metal contact on the plug bit making that metal button completely useless.:mad:

Beaverman3001
Sep 22, 2011, 03:21 PM
I don't see how this is "normal", mind you I'm no electrical engineer. I would not keep a product that shocked me, or even gave the sensation of having current run through it like that.

gyorpb
Sep 26, 2011, 08:42 AM
Yeah, but it's missing the metal contact on the plug bit making that metal button completely useless.:mad:MagSafe adapters are grounded, if used with the cable with the three-pronged plug.http://img.alibaba.com/wsphoto/v0/493333720/UK-plug-volex-power-cord-for-apple-macbook.jpg.tsooJ

komoornik
Sep 26, 2011, 09:01 AM
Grounded or not grounded? That is the question.

thatdrewguy
Sep 26, 2011, 09:43 AM
I live in the US and when plugged in to 110-120 volt electric plugs no vibrations. Now that I'm traveling and using 220 volt circuits I do notice the tingling electrical vibe. It is more apparent on the thicker part of the keyboard assembly near the hinge than on the razor blade corners.