I have a 42LB5DF-UL and am having the same problem as others, where when you turn to tv on, the green light flashes and the sound comes on, but no picture. Has anyone been able to resolve this issue?
My experience with this problem has been on-going for a while now. It hasn't really gotten too much worse. Seems to happen once or twice a week. Every now and then, I have to cycle the tv on and off a few times before the picture comes on. I have noticed, as others have, that if the tv is left OFF for a longer period, there is a better chance the issue will occur.
I have also notice that the issue tends to occur after using my hdmi connected dvd player. If I watch a dvd or divx with the player and then shut off the player while the tv is still on the dvd source, there is a good chance the issue will occur the next day. Seems far fetched, but it has happened enough times that I think there is a link. Something about the tv not sensing an active hdmi connection or something.
Any advice or experiences from others on resolving this issue would be appreciated!