Chosen Solution
My Samsung Un46F6300 tv had dark shadow at the top of the screen but I could still see the pic. I replaced all 8 led backlight strips and the interface strip. When I turned on to check that all the leds worked, they turned on, blinked once, then after about 10 seconds, they dimmed. I disconnected the cable to the main board and they stay on and don’t blink once and they don’t dim. Could this be a problem with the main board?
@djtayulor this “I disconnected the cable to the main board and they stay on and don’t blink once and they don’t dim. “ makes me think the error is coming from your main board. Replace it and re-evaluate. See if that fixes this.
