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How do I brighten my monitor?

5730 Views 5 Replies Latest reply: Dec 28, 2009 9:14 AM by Allan Jones RSS
Phillip Anthony Level 1 Level 1 (60 points)
Currently Being Moderated
Dec 27, 2009 8:53 AM
I have been trying to brighten my old PB's dim monitor, but most Knowledge doc's indicate a Model Number is needed to proceed correctly with a PMU reset. I just completed a PRAM reset but that did not help.

Can someone please tell me how to find the Model number of my computer?

I have taken the battery out and there is no Model Number in it's cavity underneath the computer. I have also looked in the Pref's again without finding a Model Number.

I purchased my G4 17" 1.33 Gh PB in December of 2003, if that helps. Any help will be appreciated.

Thanks!
17" PowerBook, 24" iMac, Mac OS X (10.6)
  • Allan Jones Level 7 Level 7 (29,570 points)
    Currently Being Moderated
    Dec 27, 2009 12:01 PM (in response to Phillip Anthony)
    The processor speed and screen size should be all you need to get the instructions in this Knowledge Base document:

    http://support.apple.com/kb/HT1431#faq10

    The link should open at the point in the document that addresses your model. If not, this is what is says for your model:

    1) If the computer is on, turn it off.
    2) Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
    3) Wait 5 seconds.
    4) Press the Power button to restart the computer


    You don't have to enter a model number into the computer before resetting the PMU.
    PowerMac G4 MDD 1.25G SP;, Mac OS X (10.4.11), ; MacBookPro Late2007 2.2G 15" (10.5.8); PowerBook G4 1Ghz 17" (10.4.11)
  • eww Level 9 Level 9 (52,975 points)
    Currently Being Moderated
    Dec 27, 2009 12:25 PM (in response to Phillip Anthony)
    Go ahead and reset your PMU, but I don't think you're going to see any appreciable brightening of your old display backlight. Dimness is a product of the fluorescent tube's aging, and it's not reversible.
    15" MBP unibody 2.4GHz/4G/250G; TiBook 1GHz/1G/120G; PTProG3 500MHz/768M/160G, Mac OS X (10.5.8), film and flatbed scanners, projector, graphics tablet, laser and photo printers
  • Allan Jones Level 7 Level 7 (29,570 points)
    Currently Being Moderated
    Dec 28, 2009 9:14 AM (in response to Phillip Anthony)
    Have you tried going to System Preferences > Displays and hitting the "Color" tab. You can re-calibrate your monitor from there, overriding current profiles to make the image brighter. As you are crunching images, you may prefer to beg or borrow a "spider" color calibration unit from a co-worker to get a proper profile. If you simply need brighter--if not correct--color, the Displays prefs may be the best path.

    The pre-programmed color profiles on my PB17 (10.4.11) are all brighter than the one I created. Try those before creating a new one.
    PowerMac G4 MDD 1.25G SP;, Mac OS X (10.4.11), ; MacBookPro Late2007 2.2G 15" (10.5.8); PowerBook G4 1Ghz 17" (10.4.11)

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