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Yellow Discoloration

43578 Views 262 Replies Latest reply: Jun 15, 2006 3:25 AM by Jose M Olaya RSS
  • HiramvdG Calculating status...
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    Jun 12, 2006 5:19 AM (in response to Technarch)
    technarch said:
    Smokers sweat nicotine out of their pores and it's yellow.


    Nicotine is a colourless substance.

    MacBook 1.83 GHz, 1 GB RAM (dead on arrival, to be replaced)   Mac OS X (10.4.6)  
  • iPud Calculating status...
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    Jun 12, 2006 6:40 AM (in response to HiramvdG)
    The yellow component of sweat is actually urea. It would be found in both smokers and non-smokers sweat.
    iMac G5, Blackbook, Mac OS X (10.4.6)
  • PhAdE Calculating status...
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    Jun 12, 2006 7:47 AM (in response to stauffere)
    For what it's worth, I'm just logging in to tell you guys I have the exact same palm-rest discoloration on my Toshiba Satellite P30. It's made of basically the same polycarbonate that the macbook is made out of, and has gone from silver (Roughly #C4C4C4) to greenish dark grey (Roughly #899A87) in the 2 spots where my hands sit while typing. I'm planning on buying a mbp at some point, and the wife is planning on picking up a white macbook, so this issue is pretty concerning.

    Good luck figuring it out.
    Toshiba P30 RG1, Windows XP Pro
  • m123456 Calculating status...
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    Jun 12, 2006 7:54 AM (in response to stauffere)
    people (maybe some of those here) have brought it to gizmodo's attn.



    http://gizmodo.com/gadgets/laptops/macbooks-looking-skanky-179985.php
    powerbook, Mac OS X (10.4.6)
  • Egbert A. Friedrich Calculating status...
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    Jun 12, 2006 8:05 AM (in response to stauffere)
    This worries me much so I'd like to ask all of the people with this prob to deliver more informations to figure out whether it's a Hardware- or User-related problem:
    1. Which processor? (seems that heat is playing a major role)
    2. Which HD (size) and WHICH rpm? (faster HD is getting hotter, see above)
    3. Does any thing you lay between your hands and the case solve the prob (does this coloration really comes from perspiration or does the color change 'cos of the heat from ...)

    Pics of other machines or hints to really resolve this prob (what does Apple says etc.) might also be very welcome.

    Too many   Mac OS X (10.4.6)   ACSA, ACTC, ACHDS, ACDT, ACPT
  • andrewjnyc Level 1 Level 1 (95 points)
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    Jun 12, 2006 8:13 AM (in response to Egbert A. Friedrich)
    I have a black MacBook and the wrist rest area has definitely gotten a little shiny as a result of sweat and fingerprints, but there's no discoloration (obviously). I gotta say this problem makes me really glad I paid the extra $$$ for black. I haven't tried any products like iClean yet to remove the shine, but I sure hope I'm not in the same boat as those with white MacBooks where that's concerned.

    One thing I can't help wondering: if the Invisible Shield people released a MacBook product, would it be able to protect against this sort of thing happening, or is that not likely?
    eMac G4 (work), iBook+ Mini (home), Mac OS X (10.4.1)
  • kjk Level 4 Level 4 (1,305 points)
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    Jun 12, 2006 8:25 AM (in response to stauffere)
    i actually remember this being an issue with the Powerbooks as well-some people's sweat seemed to adversely affect the finish of the palm rest areas.

    i've had my MacBook since opening day, and have no yellowing or discoloration anywhere yet (knock on wood). The one thing I would question is that some people are blaming the heat-while my MacBook definitely ranks (according to the IntelMac database) as one of the "hotter" running ones, the top of my MacBook is very cool at all times, and there is no heat anywhere near the palmrest/trackpad area. The hinge gets warm, and the underside near the connectors gets quite hot, but nothing on the top surface.

    edit: it was actually pitting of the PowerBook surface:
    http://saladwithsteve.com/osx/2004/10/powerbook-pitting.html
    ugh.
    mac mini 1.42, macbook 1.83, Mac OS X (10.4.6), Mac OS X 10.3.9 for Mini, OS X 10.4.6 on macbook
  • PaulNYC Level 1 Level 1 (105 points)
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    Jun 12, 2006 8:25 AM (in response to andrewjnyc)
    Andrew, would you mind trying to clean off your palmrests to see if the stains are permanent? I had a black macbook that I returned for other reasons and was going to order a white macbook, but now when I read these yellow discoloration posts I'm having second thoughts.

    Cosmetically, it seems to boil down to this:

    1. white macbook: small scratches everwhere but not so visible, yellow discoloration that doesn't go away

    2. black macbook: smudges all the time, easily scratched and visible scratche and nobody knows what the surface material really is and whether it will start peeling in the near future.
    MBP, Mac OS X (10.4.6)
  • BitBucket Calculating status...
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    Jun 12, 2006 8:26 AM (in response to stauffere)
    Here is another photograph:

    http://img235.imageshack.us/my.php?image=213yk.jpg

    I have the base model with the only upgrade being the RAM (to 2GB.)
    MacBook, Mac OS X (10.4.6)
  • Inaki Calculating status...
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    Jun 12, 2006 8:27 AM (in response to Egbert A. Friedrich)
    This seems to e the same problem we have with lamps in the entertainment industry. Oils from the body will react with heat and burn through the glass. It seems to me that if the plastic in the MB is soft enough to be corroded at a lower temperatur that may be what's happening. Best way to avoid this (like we do with lamps at least) is to clean the surface with isopropil alcohol, which will evaporate the oils with it.
    MacBook Pro, Mac OS X (10.4)
  • PaulNYC Level 1 Level 1 (105 points)
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    Jun 12, 2006 8:33 AM (in response to BitBucket)
    Here is another photograph:

    http://img235.imageshack.us/my.php?image=213yk.jpg

    I have the base model with the only upgrade being the
    RAM (to 2GB.)


    That looks worse than awful. Yuck! I would really like to give it a go with some good cleaner though....surely some of it must come off?
    MBP, Mac OS X (10.4.6)
  • BitBucket Level 1 Level 1 (0 points)
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    Jun 12, 2006 8:36 AM (in response to PaulNYC)
    I have tried Windex, Simple Green, the much-vaunted Magic Eraser, and just soapy water. It doesn't come off or even lighten -- it's almost as if the plastic is actually changing to that color.

    I haven't called Apple yet because I don't want to be without a computer for 4 days until I know the issue will be resolved and I won't have to keep sending it back every 2 weeks to get the casing replaced.
    MacBook, Mac OS X (10.4.6)
  • cecemf Calculating status...
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    Jun 12, 2006 8:46 AM (in response to PaulNYC)
    Did anyone tru to bring it back to the store ?
    If so what they say ?
    Are they gonna change it ?
    I want a MacBook !!!, Windows XP Pro, AMD 64 +3000, 2Go, 250go SATA, X-FI, Geforce 6600GT
  • Nick A Calculating status...
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    Jun 12, 2006 8:47 AM (in response to BitBucket)
    Unless you're calling apple to ask about it what's the point of filling up these forums with complaints? I'm not singling you out, but if something is wrong with it you need to make it known to apple and have them take care of it.

    Nick
     MacBook Black, Mac OS X (10.4.6), 2GHz, 2GB RAM, 100GB @ 7200RPM
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