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Thank You for the question! CLICK HERE to see a video that will possibly fix this problem
Since this is an LED you press at the bottom
If this does not fix it them the problem is in the lcd panel...in other words the connection is too micro to repair.
It is not costwise to replace an LCD Panel...LED Tv's use LCD panels...the only difference is that LED type use light emitting diodes for the backlight and LCD use florecent bulbs