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Why wont my Sony BRAVIA KDL46BX450 turn on? The problem is the screen will come on for 1 second and then goes black.

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I need more info please not just the number .make model please.

Posted on Dec 07, 2016

Testimonial: "Sony BRAVIA KDL46BX450 46-Inch 1080p HDTV"

  • noel
    noel Dec 07, 2016

    this is what i found out on the internet.....
    Expert: Dan replied 3 years ago.
    Well, there are 3 possible causes for something like this...

    * Blown line fuse (possible but unlikely to be the only issue)
    * Faulty main board (possible)
    * Faulty power supply board (most probable)

    I wouldn't recommend ordering all 3 pieces without doing some internal testing. Do you have a digital multimeter so we can narrow this down?
    Ask Your Own TV Question
    Customer: replied 3 years ago.

    how much wiould this cost to fix
    Expert: Dan replied 3 years ago.
    Good question.

    * If it's just the line fuse and nothing else (this is unlikely) you can replace the fuse yourself for $1, or hire a pro to do it for $50-$100.

    * If it's the main board (again, fairly unlikely) you can replace it yourself for $100-$150 depending on where you get it, or hire a pro for $250-$350 including parts and labor.

    * If it's the power supply (most probable cause) you'd be looking at $50-$100 to do it yourself, or $250 to have a local pro do it.


    .this is all i could find...

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