The screen flashed once then went Black

Jacob Hanson BeRhap  we’d need to know the exact model number for your TV. Since the screen flashes and you retain the sound this could be a backlight issue. Once it is ark and you have sound, shine a flashlight beam at an angle against the screen. See if you can make out shapes etc. If so it’s your backlight. If not, then you need to remove the back from your TV and take a look at all the board. Start with the power board. you’ll need a multimeter to measure the voltages required by your TV. Post some good pictures of your boards with your question so that we can see what you see.

Adding images to an existing question