Lcd screen keeping 'dimming'

I'm sure there is an easy fix for this.
I notice if i haven't used my computer for several minutes, the screen dims, and then quickly brightens againa as soon as i touch the trackpad or any keyboard button.
I have gone into the options listed under the battery icon. I have tried to set it to best performance, it still seems to occur, i have gone into custom and and energy saver and set the sliders for putting the screen and computer to sleep for both the battery and the power adapter to 15 minutes. I have locked the settings.
It still seems to occur.
Peculularly, i often go back into this area, and the lock is UNlocked again, without me entering my password.
Is the screen supposed to dim? I find it annoying and would like to turn it off.
mbp 15", 2.16, 100 gig 7200 hd Mac OS X (10.4.7)
mbp 15", 2.16, 100 gig 7200 hd Mac OS X (10.4.7)

I can understand your frustration with this, and with some of the responses...
Check out that link in this thread, I have outlined "improvements" to the situation in the last post.
There is no official solution, and apple did not address my question during my last repair.
I will be setting up another pro care session within the next month and will try to reproduce this for them.
Supposedly this has been going on since the Powerbook Era, and is nothing new. Unfortunately I've only noticed it with the MacBook Pro, and never with my powerbook.
Keep an eye out, and eventually we will find the source of the problem.
Now here's the REAL question:
Does anyone know if there is a log (say in console) of when/why/how the screen dims, much like there is a log of system sleeps???
I think that will answer our question, and find the source of our dimming despite all the appropriate settings UNCHECKED!

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Martine.T wrote:
I dont have that option available....
You have to go to System Preferences > Displays (not Energy Saver where you were).
If you really don't have it, and you have an external display attached, that's the reason why. If that's the case, let me know, and I'll give you directions to do it.

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I agree with Akuma. If an external monitor works properly it looks like that the FL inverter is faulty. This inverter controls the backlight of internal display and even it would be faulty you can see the picture but very very dim.
If think the best would be contacting an authorized service provider. The guys can order an original FL inverter that is compatible and replace it for you because the display itself must be disassembled and thats not easy.
If your notebook isnt under warranty anymore dont worry because FL inverter is not so expensive. :)

Why does my screen keep dimming?

Screen on macbook keeps dimming after a few seconds, even when I put it at the brightest and I'm in the middle of using it.

If that doesn't help, perhaps this is your cause:
https://discussions.apple.com/thread/5194100
Unfortunately, I haven't found the answer yet.

RANT: Why does screen keep dimming even when "DIM" is disabled?

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What about the option of "Automatically adjust
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William
William - anyone with this problem I can guarantee
shut off every screen dimming option.
I have this issue. It seems to be intermittent.
What seems to improve it - Restarting, or unplugging
and re-plugging in the mag safe charger.
These have been my only solution. I have even turned
off all display changes for battery power so that
there shouldn't be any "confusing" factors for the
computer.
I wouldn't care so much about this issue if it wasn't
for the screen whine with decreased brightness.
I trust apple will fix this with software or firmware
updates.
I checked my 1.67 PB 15", it does what is being described. Software?
William

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Lcd screen keeping 'dimming'

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