Am I being electrocuted or vibrated?

Discussion in 'MacBook Pro' started by dogtanian, Oct 31, 2007.

  1. dogtanian macrumors 6502

    dogtanian

    Joined:
    Jun 26, 2007
    Location:
    Bournemouth, UK
    #1
    OK, here's my random story. I bought a 'Genuine' Powerbrick of eBay for my 12" Powerbook. Turns out its an amazing fake (ie, the only way I could tell was the cheap plastic nubbin on the cable and the fact that the sticky plastic cover left residue all over it :mad:).

    I really don't mind its fake as its a bloody good fake. Randomly though, sometimes when i put my fingers over the wrist rest area, i can feel a very mild current going through me. At first I thought it was a vibration but then I touched my other half with my other hand and he felt it too. Its a little strange but I wanted to check I'm not in any danger :p

    Plus now if I run my fingertips over my new MBP's lid, it gives me the same sensation.

    Am I crazy?
     
  2. lexus macrumors 68000

    lexus

    Joined:
    Mar 26, 2006
    Location:
    Depends Greatly On The Weather
    #2
    Its a small current and it even happens with Apple original power bricks, I heard it could be an internal wire which is in contact with the aluminum causing a current.
     
  3. joedub macrumors newbie

    Joined:
    Jun 29, 2007
    #3
    I was told at my local genius bar that the slight current is "normal" when you are using the two-pronged plug. I swapped the two-pronged plug for the three-pronged one and haven't had any problems since.
     
  4. dogtanian thread starter macrumors 6502

    dogtanian

    Joined:
    Jun 26, 2007
    Location:
    Bournemouth, UK
    #4
    Ahh thank you guys. I am not crazy, believe me its a great relieve to hear that. :)
     
  5. majidf macrumors member

    Joined:
    Jun 6, 2005
    #5
    I have always used 3-prong plug and always had that electric current on every (6) MBP SR I had.
     
  6. dogtanian thread starter macrumors 6502

    dogtanian

    Joined:
    Jun 26, 2007
    Location:
    Bournemouth, UK
  7. Super Macho Man macrumors 6502a

    Super Macho Man

    Joined:
    Jul 24, 2006
    Location:
    Hollywood, CA
    #7
    I'm not sure what UK power plugs look like, but try flipping it 180 degrees if it fits that way (prong A -> slot B, prong B -> slot A) - something to do with polarity or something. Worked for me & my TiBook a long time ago.
     
  8. dogtanian thread starter macrumors 6502

    dogtanian

    Joined:
    Jun 26, 2007
    Location:
    Bournemouth, UK
    #8
    UK plugs are very different and have three large prongs, not reversable though (ie you can't turn them upside down).

    I believe US plugs are similar to European plugs...
     
  9. dotcomlarry macrumors regular

    Joined:
    Jul 16, 2002
    Location:
    Akron, PA
    #9
    This is a common occurrence when using a non-grounded plug.
     
  10. beige matchbox macrumors 6502a

    beige matchbox

    Joined:
    Mar 16, 2005
    Location:
    Oxfordshire, UK
    #10
    And grounded plugs too ;)

    both my G4 Powerbook, and my dads MBP give the ripple on the case, i've also had the same thing on many other metal cased mains powered devices.

    My dad (electronics engineer since the 60s) tried to explain whats going on, but i've forgotten it all now, but the gist was it's nothing to worry about :)


    Also, the UK mains plug is 3 pin only. Well, shaver plugs in bathrooms are 2 pin, but thats a special case
     

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