Chosen Solution
My LC-50LBU591U shut off suddenly as I was watching TV earlier today. The blue light that would appear when the TV is off is now gone. I cannot turn it on with the power button or remote either. I tried holding the power button for 30 seconds with it being unplugged and no luck.
hello John N, my name is John. with the symptoms you have describe it sound as if the power board died on you. i would look up a new one and replace it being the t.v. is a 50” and all it would be worth it and a relativity easy fix. Any questions feel free to ask.
