I have a Samsung LN40A650 lcd tv that has been giving me some problems lately.
At first what it did was sometimes not powering on the screen, but the sound did. So I had a black screen and sound working (with the red led flashing a lot).
Now image is working but I always have an anoying horizontal white/purple line at the bottom of the screen.
I really don't know what to look for. Obviusly my warranty expired a couple of months ago.
Anyone who could help me figure it out?