What's the F1?
What is connected to the TV when this happened, and do any other inputs or devices work?
I have a Samsung LE32R73BDX and was watching the F1 this morning when the picture froze for about 1 second then fadded away. I am now getting no picture although the backlight is still working. Any idea's of which board could be at fault. Hope you can help, and thanks for your time. Tony