Hello,
I have the TV over 3 years, The main board was replaced and some parameters in the service menu were changed.
First the picture was stretched while watching on 3D movie.
I have changed the Type to the right one and the 3D works now. Still i don't know what should be in the "Front color" under "Option".
Mine model is : UA46D6400UMXSQ
Please is someone has the same TV or similar such as:
UE46D6400
UN46D6400
Or even XX40D6400 / XX46D6600
Please look at the service menu --> Option --> Front color
and write what you have
Thanks

Chowhound
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