Chosen Solution
So my 4k 65 inch TV just blacked out. I believe the LEDs are defective as I can still see images if I shine the screen it self with a bright flash light. Can anyone direct to me to the appropriate LED replacements for this TV? Or will any LED strips work?
Vocation going by the number you supplied your TV should be a 50" TV. The backlight strips are available at places like this. Not very common that all of them will have failed. I would double check the power supply which provides to voltages for the backlight.