Chosen Solution
Samsung UN50NU6900B Hello, Part of the backlight on the TV doesn’t turn on. I have no idea if it is a power supply problem or a LED strip problem. Thanks for any help!
@crazypancake use a multimeter and check the voltages on your powerboard leading to the LED’s. Compare it and see if they are equal (relative). If not you know it is your power board. This does look more like a bad LED strip then the power supply.