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Samsung BN44-00873C

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    Samsung BN44-00873C

    I have 3 of these with the same exact issue
    the 400v voltage doubler pulses and so so every power supply on the board pulses the symptom on the tv is the backlights pulse on and off with no main board connected (should be solid on) replaced backlights in the tv with new
    ordered a new board but i would like to know if these boards can ber fixed or if anyone has seen it before ?
    jumped over the filter caps no change
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