5346 Views 8 Replies Latest reply: Apr 19, 2010 7:12 AM by maxymac
This has been happening as long as Apple has made aluminum laptops. The silver paint is not adequate to protect the aluminum for some users. My 15" Powerbook had significant black discoloration at the palmrests in less than a year - Apple DID replace that for free.
On my current MBP 13 - I bought the 'Moshi Palmguard' - which is perfect.
Welcome to Apple Discussions!
Is what you're seeing some black pits? If so, you may be one of the unfortunate individuals whose body chemistry reacts with the aluminum housing. The aluminum is anodized, not painted, but the anodized finish is very very thin, and evidently some people's body chemistry can penetrate it and cause these black pits. It may be that the individuals you showed the blemishes to haven't seen them before, but as tele_player points out, this has been happening for a very long time. I believe that some people have been successful at getting replacement tops.
It's worth noting that we're talking about a mighty short length of time here--3 1/2 months or so. It's conceivable that there could even be a defect in the anodized finish of your Mac that leaves the surface more porous than it should be.
You might try calling Apple back on the phone and ask to speak to Apple Customer Relations. They are a special tier that may be able to help you with this problem. Be very nice and polite to them, but stress just how unhappy you are to suddenly have this problem. If you have used aluminum portables in the past with no such issues, you can make the argument that you've never had this problem before. If you do get a new case out of this, by all means consider using a protective pad of some sort. They might replace it once for this problem, but they wouldn't replace it more than once.
Apple replaced the top case on my aluminum Powerbook for the blackening, and the replacement did it too, though I didn't try for another replacement. They might not be as quick to do it with a unibody.
Anyway, the solution for those of us with caustic sweat is the Moshi Palmguard. It's also a good way to hide the corrosion if it has already occurred. The fit and color match are perfect, and it includes a skin for the trackpad too..
@S.U. I got the first Macbook unibody aluminium (not the MBP) for something like one year, before I've bought this one. Never had blemishes on that one, never had problem like this. Today I'm gonna call the Apple assistance, tell them to talk with Apple Customer Relations, I'll try to expose them the problem. I recently bought the Moshi Palmguard, but i've not still applied that 'cause I wanna try to figure out this problem and trying to have my case replaced. I think this is a right of mine and I wanna go deep in the question.
Anyway, the blemishes I'm talking about are not properly 'black', I can see them white, like the aluminium is really discoloring (absurd!).
@tele_player: how many time they need to replace your case? What you've done to have it replaced?
Thank you folks for the answers!
When my Powerbook was almost a year old, the screen had developed big white spots (which was a common problem back then), and the palmrest area had blackened quite a lot in the areas rubbed by my hands.
I took it to an Apple Store, and they sent it to Texas. About 2 weeks later, it came back with a new display and a new top case.
If it's possible, an Apple Store should be the first step.
Since this happened with the new MBP but never happened in the past with the aluminum MB, that strengthens your case that there may be a flaw in the metal finishing (anodizing) on your new MBP. I believe that aluminum oxide is white if it's white that you're seeing. It may be reacting to the oxygen in the air and not to your body chemistry, and this is something that most MBP's would not do. My nearly 3 year old original MBP has no such oxidation. Be persistent, and hopefully they will replace your case.