Chosen Solution

LG65uh5500 red light comes on for 2 seconds blinks 2 times and goes out,picture flashes for 1 second goes out,no picture no sound.no staqndby light

Dennis Theberge sounds like a power board issue. Remove the back of your TV and take a look at the boards. Post some images of your boards with your question. Use this guidefor that. That way we can see what you see.