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Samsung PN50C540...No Picture only Sound

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    Samsung PN50C540...No Picture only Sound

    Seems like a common issue with these crapy TVs. So basically the TV has no picture but sound is good. Opened it up and measured the voltages. All the voltages were close to zero. Then after few troubleshooting steps i figured out that its only when the ribbon cable between the logic board and Y - sus board is connected, the voltages drop but as soon as I take this cable out the voltages are all good. I changes the Y - sus but no luck....so is it the logic board? Main board? or the power supply?

    Please help!!!!
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