Thanks for your message! But just so you know, I support US products and customers. And from what I can tell, this model is for Singapore. (Correct me if I'm wrong.) So if you want the most accurate information, here's the Samsung Singapore portal for support on that product: http://www.samsung.com/sg/consumer/tv-audio-video/television/led-tv/UA40F6400AMXXS
Hope this helps you!
My led tv screen went blank but sound is still working fine.
I asked a technician to check and he took the motherboard and power supply to check but didnt get success.
I again check Tv after fitting all the parts and now blue screen comes and after few seconds screen starts getting black.
I dont know what to do with this now.
It is Samsung led tv 40" HD (3D).