I have Samsung LS-S4051D 40 in LCD for little over 1 year old. When I turn it on 7 out of 10 times I only hear audio but no video. The screen is completely dark as if it is powered off. I have to switch on and off several times before I can see the picture. Also sometimes it happens while watching a program.

Any clue?

Thanks.

Televison & Video - Samsung - LN - LN-S4051D 40 in. LCD Television