Chosen Solution
I have a Samsung UN60J6200AFXZA. The screen just up and faded to black while in the middle of gaming. Red standby light blinks 3 times and then double blinks. I took the back panel off and plugged it in. (I’ve been using a surge protector for years.) The backlight flashes through the holes. When I disconnect the main wires from both circuit boards the backlights still stay flashing. I believe I read somewhere that if you unplug the wire and the backlight stays on then it means one thing and if it stays flashing it means another.. Well mine stays flashing. The capacitors dont seem burned or bulged. Can anyone tell me which board most likely needs replacing? Or is it an LED strip replacement? Kids are driving me crazy!! Thanks!
@coldmainer sounds like a backlight array (strip) issue. Some of the LED’s are heating up and turning off and thus create the cycling. Of course you do want to check the power board output to the LED’s to make sure that it is not the board turning it off.