Black Screen after Power Surge

@deeceegee this could be power board issue. Unplug your set and remove the back from it. Take a look at all boards. Check for obviously damaged components like leaky or domed looking caps. Take some good pictures and post those with your question. That way we can see what you see. Use this guide 기존 질문에 이미지 추가하기 for that. After that you can try something. Remove the cable from the power board to the main board and turn your TV on. If your TV's backlight turns on you know that your power board and your LED panel are ok. So let us know what you find.