Ours went out today too. 2 yr old tv here too, samsung.com has a live chat, didnt help me at all though. I know I will NOT buy another samsung. Tvs are NOT disposable, they may be but my income is NOT!
They asked if it was plugged into a surge protector and it ws so had me try to plug it ino the wall, didnt help, you may try it though. Good luck.
Our Samsung 42" LCD is two years old - making weird clicking sounds and not turning on for 1 hour straight. Model no. LN-T4042H