Lcd turned brown in the corner

just recently i noticed a light brown smudge in the lower left corner of the screen. i tried to wipe it off but it turned out it was not on the surface of the sceen ... i read somewhere that LCDs have the tendancy to turn brown when theyre hot yet i turned the computer of for a day and nothing changed ... anyone had a similar problem? i have a white Intel iMac core 2 Duo 20''

#491783

How long have you had it? It might be packaging tape residue on the inside of the screen, from manufacturing. Ring an Apple store up if it's still under warranty.

#491790

well i dont know for how long i've had it but i have noticed it just perhaps a week ago ... and no its no more under waranty

#491797