2 ACD 30" running on NVidia FX 4500--why is one brighter than the other?
Last November 2006 I bought a new MacPro, 2/3Ghz Xeon, 4/500GB SATA drives, 4/1GB 667 MHz DDR2 DIMMs, and NVidia Quadro FX 4500 video card to run a 30" ACD. July 2007 (last week) I added a second 30" ACD which is noticeably brighter than the first ACD. This holds true whether running OS X 10.4.10 or Windows XP Pro w/ BootCamp 1.1.2.
After 2 hrs on phone, AppleCare advises an appointment with AppleStore "Geniuses" since it's 8 mos old and still under warranty. Today, local Geniuses respond: "it's just newer technology, nothing wrong with either one"; "you didn't buy it from us (MacConnection)"; "dim down the bright one to make it match"; store manager offers to send older one back for unspecified repair but adds "it probably won't make any difference, and since you didn't return it within 14 days of purchase (last November) we can't exchange it for a new one. Besides, you didn't know there was a problem until you bought the new one,right?" The geniuses are uninterested in making a side-by-side comparison with a newer ACD and stand silent waiting for me to give up.
Has anyone else experienced a similar problem with two ACD 30s running on a MacPro? Or this trademark indifference with respect to service?
MacPro 3Ghz, 4x500 SATA Mac OS X (10.4.10) Windows XP Pro running GIS Apps (ArcInfo Suite & Erdas Imagine)
Hi and welcome to discussions.
I think there is some natural minor variation between LCDs bought at the same time anyway. They also do tend to become slightly dimmer with age. However, Apple did update the specs on the 30" ACD during 2006, including the brightness. According to the following article it went from 270 to 400 cd/m2, a significant jump:
http://arstechnica.com/journals/apple.ars/2006/3/28/3369
When you bought in November 2006 I guess it's possible you got some older stock, especially if you bought from a third party retailer. I suspect there's nothing actually wrong with the displays themselves and hence they can't be 'fixed', other than to make some manual adjustments to the brightness etc.
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