Question about Vizio GV47LF Television

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No picture audio is fine

Problem was Intermittant, is now completly black screen. When it first started I could hear a Loud buzzing noise. If I turned it of in on the noise would cease.

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Its definately the problem of timy components on the main board getting over heated and gone faulty and needs to be checked with a multi meter and replace from the board to make it proper.just check out the capacitors AND IC .on the board and remove and replace the faulty.

Posted on Dec 23, 2008

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Now you have completely black screen because the TV is on protection mode (diagnostic mode) and does not start.

That means that there is an internal fault, probably a faulty component, a short, or a cold solder joint.

Posted on Dec 23, 2008

  • Ginko
    Ginko Dec 23, 2008

    A loud buzzing noise may have been caused by a fault, either on the audio board, or on the power supply board inside the TV.

    That was probably caused by a faulty component, a short, or a cold solder joint that started giving the trouble.

    Now theon circuit detected the fault and will prevent tv from starting.
    In this case the TV will stay in standby.

    If the TV instead is completely dead, with no power at all , that means that the PSU is gone.

    In both situations you need to call a technician to fix this.


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