Creeping current problem

Hi,

I bought my first macbook air 13. If I touch the casing of the laptop I feel some vibrations which are probably caused by creeping current. I feel this vibrations only, if I use the power plug without ground contact.

Is this the case for all macbooks because of the aluminium casing?

km

 

Can't say I've ever had this problem. One of the screws holding the logic board to the case might not be secured properly. If you can return it to the store, I would do so and exchange it for a different one.

 

I've had all of my MacBooks do this. My 2011 13" MBP, mid-2011 13" MBA, and now my 2012 15" MBP. My girlfriend's mid-2011 11" MBA does this as well. They all experience this issue only when using the AC adapter without the extension (which has the ground prong). I really don't think it is cause for alarm though and, for me, the problem goes away after using my MBP for a little bit of time. I also added a black, plastic snap case to my MBP and the problem went away. It wasn't due to the plastic snap case but rather, with that on, the MagSafe connector is at a slight angle so it isn't fully touching my MBP's exterior like it is without the snap case.

On a side note, my boss has an all aluminum Dell workstation (it looks like exactly like a ThinkPad) and his system does the same thing when it is plugged into its AC adapter (which doesn't have a ground option).

 

Wow, I've never noticed this on any of my Macbooks. Not sure how good it is for our body to be absorbing those currents...

 

Indeed, that is a new one for me - all of mine happen to be the grounded plug so that fits. That's pretty interesting - seems like something I'd probably end up buying a new adapter to fix as that issue, even if harmless, does seem kinda freaky.

 

thanks for the reply. I will send it back and order a new one. I just wanted to be sure, if this is a common problem.


km