dimming screen is driving me CRAZY

so i took my ibook in to get the screen problem fixed and it was a little better, but today i noticed that the screen is dimming in quick jolts, while i watch, not even touching the computer. WHAT DO I DO! i bought it from mac mall in october...should i assk for an exchange or should i continue to hound the apple store employees for answers? PLEASE HELP

sounds like this is checked off in Universal access
or the energy saver window is clicked to dimm the screen before sleeping screen or HD

iNAP said:

sounds like this is checked off in Universal access

Click to expand...

nope thats turned off, this has gotta be a loose wire or somethin.

or the energy saver window is clicked to dimm the screen before sleeping screen or HD
incase you missed my edit

iNAP said:

or the energy saver window is clicked to dimm the screen before sleeping screen or HD
incase you missed my edit

Click to expand...

nope i checked. man i dont know what the **** is wrong

there is also something else that does this i saw it in my system travels I'll look again

i saw something else somewhere, I thought maybe Universal Access but I'll be ****ed if I can find it again, sorry dude good luck Hopefully someone else will have an idea

hmm i recall reading another thread about this try searching the boards...

I had a similar problem with a PC laptop one time, the LCD backlight inverter was just loose and the screen would just go out at really random times, I just opened it up, unplugged it, then plugged it back in nice and snug, it has worked every since.

Take it to the apple store, plug it in and show them what is going on...
If they say it is normal ask them to reproduce it on the demo iMacs.
If they can't, tell them you want an exchange or it fixed ASAP.

I know some people get confused with the automatic dimming, because I think it does it anyway, regardless of the setting...

Does this only happen when you don't touch anything for a while? Does it always dim by the same amount? If so I think it's normal...

no it doesnt look anything like the automatic dim, it flickers, it doesnt just go dim