Post some images of the back of your TV with all the boards with your original question. You can see the on-screen display but it's very faint and distorted. Ok, if your TV is shutting down entirely, it can be caused by either the power supply board losing power or the main board shutting it off.
I'm still poking around but I'd like some direction from the experts. If you are looking for bridal shower favors, decorations or unique shower ideas, this is the place to be. There's nothing you can do to resolve flickering from a video source. I have a decent background in electronics but zero experience in tv repair. There are two places to look for the problems, the backlight inverter board and the power supply. Atomic number web develop and control an abstract. You can also check the transformers they are close to were the wires plug into the panel, make sure all transformers read the same amount of resistance if not you have found a bad one.