New MBP trackpad = Slight electric tingle on fingers when using

Discussion in 'MacBook Pro' started by iViking, Oct 25, 2008.

  1. iViking macrumors 6502

    Joined:
    Oct 23, 2006
    #1
    At first I thought I was going crazy, but in fact I can feel a ever so slight electric tingle on my finger when sliding it across the track pad.

    Does this happen to anyone else?

    Try it.

    Very gently touch the pad with your finger pad and tell me you don't feel it! It's easier to feel it on the full pad of your finger than on your finger tip.

    In other words, my computer is constantly shocking me electrically. What joy!
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
  3. iViking thread starter macrumors 6502

    Joined:
    Oct 23, 2006
    #3
    I saw that thread but many claimed it was when the magsafe wasn't properly grounded.

    In this case, it happens even when using battery power.
     
  4. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #4
    It's a Microsoft thing:
    "Hello, I'm a PC!"
    "Hello, I'm a Ma.. ZZZZzzzzzzttt! I'm a Ma... ZZZZzzzzzzttt!"
     
  5. duffyanneal macrumors 6502a

    duffyanneal

    Joined:
    Feb 5, 2008
    Location:
    ATL
    #5
    Are you connected to a peripheral like a printer or scanner?
     
  6. iViking thread starter macrumors 6502

    Joined:
    Oct 23, 2006
    #6
    No. It's not even connected to a mouse.
     
  7. maclover001 macrumors 6502a

    maclover001

    Joined:
    Mar 25, 2008
    Location:
    Vancouver, Canada
    #7
    This is probably a really stupid idea, but if you disable the trackpad, can you still feel it?
     
  8. DoNoHarm macrumors 65816

    DoNoHarm

    Joined:
    Oct 8, 2008
    Location:
    Maine
    #8
    Glass does not conduct electricity

    Glass does not conduct electricity, so I hate to say this, but you might be imagining this... Why don't you test it? I would go to an electrician or hardware store and get a voltmeter and see if there is a reading from the mousepad. Again, glass doesen't conduct. The only way I can even imagine feeling something would be if there is a coating on the class that is hooked up to a high power voltage, like over 12V, but again this seems unlikely.

    Please post results if you choose to quantify this numerically by going to the electrician or hardware store.
     
  9. UltraNEO* macrumors 601

    UltraNEO*

    Joined:
    Jun 16, 2007
    Location:
    近畿日本
    #9
    On the UMBP there has to be some electrical coating on the surface of the glass in order to enable it to be used as a trackpad, without such a coating it wouldn't sensor your touch and movement. I'm thinking similar to a LCD segments, invisible to the eye but apply some current and you get a black/white image depending on the polarizing overlay.
     
  10. LinMac macrumors 65816

    Joined:
    Oct 28, 2007
    #10
    Try to go to a local retailer that has these units on display to see if you feel it on those too.

    I've used it for several days without feeling anything different. The trackpad feels almost the same as the trackpad on the Macbook Pro Classic (damn you all for making the Glassbook Pro sound like New Coke!).
     
  11. raymondu999 macrumors 65816

    Joined:
    Feb 11, 2008
    #11
    I don't think you're alone, only in my case, it's intensified. Everytime I boot up any of my Macs, I feel an intense tingle of joy and awe running down my spine...

    Oh wait, am I thinking of the wrong kind of tingle here?:p
     
  12. UltraNEO* macrumors 601

    UltraNEO*

    Joined:
    Jun 16, 2007
    Location:
    近畿日本
    #12
    Perhaps you should stick your fingers in the socket,
    i'm sure you'll enjoy the tingle from there too!! :D
     
  13. 7031 macrumors 6502

    7031

    Joined:
    Apr 6, 2007
    Location:
    England
    #13
    I have the same problem with my old MBP sometimes when I plug in my external harddrive (I'm assuming it's not properly grounded or something).
     
  14. kgeier82 macrumors 65816

    Joined:
    Feb 18, 2008
    #14
    are you using the 3-pronger extension cord that came with the Mac to a PROPERLY grounded fixture?

    I got this the other day without that, on a MBP Classic. I also got it when I was holding my firewire HD plug in my hand (not grounded) and touching the back of the LCD, it was cool :)
     
  15. OttawaGuy macrumors 6502a

    OttawaGuy

    Joined:
    Mar 28, 2006
  16. applefan1997 macrumors 6502

    Joined:
    Sep 2, 2005
    Location:
    Koreatown, Los Angeles, California
    #16
    If it's like a small vibration of some kind I felt that on the PowerBook G4. It was actually on the palmrest.
     
  17. iViking thread starter macrumors 6502

    Joined:
    Oct 23, 2006
    #17
    Yeah, you're right. You can feel it on the trackpad and anywhere on the palm rest.
     
  18. whitedragon101 macrumors 6502a

    Joined:
    Sep 11, 2008
    #18
    I get the same tingle when I plug in my powered external hard drive, not on the trackpad but on the palm rests. With both hands on its not noticeable, but it is when touching with only one or 2 fingers. But it seems to go away again if I use the magsafe adapter, I think the magsafe must be grounding the case.

    Incidentally I recognised the tingle as its the same tingle I get when I plug my Ipod touch 32gb in. Rubbing your fingers over the back is like touching a vandergraph generator.
     
  19. masse macrumors 6502a

    masse

    Joined:
    May 4, 2007
    Location:
    MA/GA
  20. applefan1997 macrumors 6502

    Joined:
    Sep 2, 2005
    Location:
    Koreatown, Los Angeles, California
    #20
    I think it came dependent on body conditions, but for the most part you could feel it by your fingers.
     
  21. 840quadra Moderator

    840quadra

    Staff Member

    Joined:
    Feb 1, 2005
    Location:
    Twin Cities Minnesota
    #21
    Wrong touch technology. The trackpads and the glass screens on the iPod touch use similar technology. It is based on capacitence and depending on the thickness, screen protectors and plastic coatings don't effect their operation at all.

    840
     
  22. akm3 macrumors 68020

    Joined:
    Nov 15, 2007
    #22
    That's the reality distortion field. You are feeling it's effects slipping into space-time.
     
  23. lizwaxy macrumors newbie

    Joined:
    Feb 24, 2009
    #24
    Me too! You're not crazy- but the question is- why is no one addressing it?


    I just returned and switched out my brand new 2010 Macbook because I feel a constant low level tingling/shock using it.
    Particularly the trackpad. My fingers go numb using it for only 5 minutes or so. If I change out my fingers- it happens to them too. Other places I feel this charge are from the keyboard and from the sides of the body.

    What I feel is a low level constant tingle-almost static energy- which to me I can feel throughout my body- up from my fingertips. Like touching that thing in science that makes your hair stand up.

    I've never experienced this from a Notebook computer- I've had at least 10 laptops in my lifetime and this was never an issue. I tell you, I can almost feel it a little in my heart. I SWEAR.

    I've used this plugged in and on battery. Same effect. In sneakers. On hardwood floors. In my home, out of my home. In the Apple store. I just feel it on most Macs.

    The weird thing is alot of people don't feel it. So does this mean we are carrying more of an electromagnetic charge OR does it mean- as I feel- that Mac has an essential design error here- that perhaps the more senstive among us feel?
     
  24. INEEDANOTEBOOK macrumors member

    Joined:
    Dec 14, 2010
    Location:
    Icy City
    #25
    __________________

    You did well - you should not keep "experimenting" if you are so sensitive to these electric leakages. Some say using the extension cord solves the problem... Well, for my part, I can feel similar symptoms when I use my magic mouse and my trackpad, which both work on batteries!!

    Anyhow, even for those who do not feel anything, I'm wondering what are the long term consequences of using such things as trackpads everyday, which indeed works by letting small currents of electricity going through your fingers...
     

Share This Page