RCA LED55C55R120Q not powering up.

RCA LED55C55R120Q not powering up. I took the back off and have power at the end of the cord and the fuse is good. (i’m not sure of the name of the board the power lands on). The LED power light on the front doesn’t light up. After several turn offs/ons I do get a quick blink of the LED back lights. Then they shut off. As most post it worked in the morning and not in the afternoon