I'm very sorry for any inconvenience this may have caused you. Unfortunately, this sounds like it may need servicing. Here's the thread where you can get details on setting that up: http://forums.cnet.com/7723-13973_102-542437/service-issues-click-here-for-help/
my tv turned itself off last week and refused to turn back on. I had a geek squad member come out to assess the problem and he told me the tv needed a new main board. I purchased the board and put it in today, however the tv still is not functioning. The red standby light is on in the bottom right hand corner of the tv but when I try to turn the tv on the light simply blinks twice and nothing else happens. There is no backlight or any reaction from the screen of the tv and I have tried but failed with receiving any help from Samsung on this issue. I was hoping someone here might have had a similar problem or have some information as to what I need to do next?
My email is cynag3(at)gmail(dot)com and I would appreciate any help on this issue