No picture No sound

I have a Sharp tv, model # LC-55UB30U. Randomly one day there was no picture and no sound. I’ve done the resets. When powering on there is a glow to the screen but nothing else. No volume bar or menu screen, absolutely nothing. The power light does not flash or red, it’s a solid clear light. Ive taken the back of the tv panel off to look for popped capacitors or leaking, and all seems good there. I do see though, on the black square in the middle of the power board, looks like wire coiled around it then multiple prongs coming out of it down to the board. There is dark spots right by those prongs where they were soldered. Any help is much appreciated.