The US versions are up for sale at www.samsungparts.com and most techs would be lost without them. I know I require them for issues like yours. If you are trying to do without the manual or spare parts it's usually a dead end.
when TV is plugged in red light starts to blink and back light flashes. Red light blinks two times and repeats five times then the back light flashes. I have played with it all day and no matter what I do same result. Disconnected power supply no visual problems caps all looked good no burnt areas. powered up PWR SUP attached leds they flash. Jump pins 16 PWR ON and 12 GND no more flashing. is there is anything else I can check before I replace the power supply BN4400424A