TV Repair Tips

Make Model Problem
LG 55LM4600 55LM5800 55LS4600 55LM4700 55LM6200 55LS4500 55G2-UG Powers on but no picture - LEDs not turning on, no video using flashlight
LG 55LS4500 PICTURE COME ON PART OF SCREEN GO DIM THEN B/L CUT OFF