Vizio D55u-d1 no picture

I have replaced the power supply, main board and LED driver and still black screen. Any idea what else might be the problem? Thanks, Ted Gardner

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Can you see anything if you look close or flash a light on the screen? First, make sure that the brightness settings are not too low, if you have not already. Sometimes the simplest answers are the right ones! If things are visible in this case, there may be a backlight problem.

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