WELL WELL WELL,
i received a reply from apple. the engineering department stated.
they know it's a problem, because i've been told that the resolution to this issue is to switch to the 'higher performance' setting of the nvidia 9400/9600.
if you want to use your laptop without having to plug it in for power and at the 'better battery life' setting (that's what a laptop user would like to do, isn't it? use the laptop when there is no power source, right?), anyways, then you have to get the motherboard replaced.
BUT, there are many on this thread that have had that done and still no resolution. and there are many that have switched the setting and have had the machine freeze.
i guess if you're under warranty apple is willing to switch the motherboard out to their hearts content. UNTIL, you're not under warranty anymore.
i had this problem while under warranty and they didn't replace the motherboard. the genius at the genius bar reset the pram and did some other key combination and it went away. i was so happy it had gone away. but the blinking came back and worse than before, but of course, now out of warranty.
IF YOU HAVE THIS PROBLEM AND YOU ARE STILL UNDER WARRANTY, DEMAND TO HAVE THE MOTHERBOARD REPLACED. THE APPLE ENGINEERING DEPARTMENT SUGGEST TO DO THIS.
here's the company's response you'll find on the bbb website.
'Company's Initial Response - Posted 01/24/2011
Thank you for your recent correspondence to the executive offices of Apple regarding the above referenced customer. The following excerpt from the Apple One-Year Limited Warranty is available at
http://images.apple.com/legal/warranty/docs/cpuwarranty.pdf: “WARRANTY. Apple’s warranty obligations for this hardware product are limited to the terms set forth herein. Apple, as defined in the table below, warrants this Apple-branded hardware product against defects in materials and workmanship under normal use for a period of ONE (1) YEAR from the date of retail purchase by the original end-user purchaser (“Warranty Period”). If a hardware defect arises and a valid claim is received within the Warranty Period, at its option and to the extent permitted by law, Apple will either (1) repair the hardware defect at no charge, using new or refurbished parts that are equivalent to new in performance and reliability, (2) exchange the product with a product that is new or refurbished that is equivalent to new in performance and reliability and is at least functionally equivalent to the original product, or (3) refund the purchase price of the product.” Apple records confirm Mr. Lanz’s MacBook Pro was purchased, on June 11, 2009, and that it was covered by the Apple One-Year Limited Warranty. Since submitting his letter to the Better Business Bureau, this office contacted Mr. Lanz regarding the flickering screen on his MacBook Pro and explained it was an issue that can be resolved through repair service. While Apple declines Mr. Lanz’s request for in-warranty service, based on the terms and conditions of the Apple One-Year Limited Warranty, should he need assistance with determining if his computer is eligible for out-of-warranty service, Apple encourages him to contact AppleCare at 1-800-275-2273, or schedule an appointment at his local Apple Retail Store or Apple Authorized Service Provider. Apple appreciates the support of our customers, including Mr. Lanz’s, and strives to reach mutually satisfactory resolutions to all customer requests; we apologize that we were not able to do so in this instance. Sincerely, Nate Doss Corporate Executive Relations Apple
Initial Response Summary
Apple contacted Mr. Lanz regarding the flickering screen on his MacBook Pro and explained it was an issue that can be resolved through repair service.'
*** REPORT THIS PROBLEM TO APPLE DIRECTLY ON THEIR FEEDBACK FORM: www.apple.com/feedback
***