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I have a sony Bravia 40in flat screen LCD model KDL40V3000 does not want to turn on has a red light blinking every 13 blinks it pauses i try to unplug the tv and reset the caple box but nothing happensrsam

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Dont think that it is a case of resettting but a possible failure in the main board.The power supply works but is in the protect mode and so it switches offf. the faultt can vary with a faulty capacitorr to a shorted drvier.
It is important to open and look for the voltage short in the circuit by using a good multimeter and opening out the shorted circuit to confirm. Use a continuity test to check for short in large value capacitor/ display drivers/transformers.
If you notice bad solder joints do a touch up solderring job with care not to tamper or bridge circuits.
Credit if this helps.

Posted on Aug 21, 2010

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