Inside iMac 27" screen is dirty...how can it be cleaned or repaired?
I noticed that there are sections of my screen which appeared to be dirty but upon trying to clean them, it seems as though the dirt is on the INSIDE of the screen...it is strange, since it appears to be smudges or prints, almost smears in some cases. It was definitely NOT like this when I first got it approximately 2 years ago, and it has never been brought in for any repairs, replacement, etc. or left my house.
How can the inside of the screen be cleaned?
iMac (27-inch Mid 2011), OS X Mavericks (10.9.2)