Samsung tv blinks backlight but doesnt turn on

Jan 28, 2019
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My samsung curved 55" UN55KS9500FXZC wont show picture. The backlight flicks on and off like it's trying to turn on but never does. I opened up the back and cant see any damage or blown capacitors. When I disconnect the main board from the power board the screen stops flashing and the backlight stays on solid. Does my main board need to be replaced?
 
Jan 28, 2019
3
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10
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Tried different outlets left it unplugged for 2 days. The red light flashes like it's trying to turn on. But gets stuck in a loop where the backlight flashes and it doesnt get past that
 
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