I have an almost 2 year old 3d TV from Samsung the LA46C750.
So I started the 3d after about a month, was watching the PoTC bluray on my PS3 and a very peculiar problem occurred for the first time.
When 3d was activated, the top half of the screen had a bluish tinge and the bottom half had a yellowish tinge, in this state even the brightness was less than half of what it should have been.
On turning off and on the TV, the problem was fixed, till the next time when a 3d content after run after the 2d content was already running on the TV.
The TV is out of warranty, hence I'm very scared.