LG LED TV 47LS4500-UD black screen /Please HELP!/

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    Hello,

    YouTube video of the problem encountered: https://youtube.com/shorts/q7TLNv36LUo

    I am a pro and I have a problem that I have never seen despite my 7.5 years of experience on my own and my thousands of repairs, on a customer's Dell G3 15 3500.

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    Problem

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    Hi everyone,
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