Thanks for the Question
Can you see any visible light on the display even in a dar room please?
OK the problem you have is the backlight is out
now you MUST pursue the warranty on this as its only a couple of weeks out of warranty
their will be a grace period
So what does it need
try the retailer first then if not go directly to samsung via the website and do this today
It needs a power/led board
or it could be serious and be the LED array bad
only checks will prove one or the other
samsung will honour this you need to do that option
If you press the menu buton of the sets own remote control does the menu come up?
Yes pursue the warranty thats very important 10 days the set will still be covered thanks for rating