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No picture only sound power supply looks ok no blinking in led in front.

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  • sergioaguirr Oct 08, 2009

    i have a sony lcd kdl-40v4100 i have sound but no picture. im not sure if is the inverter. voltages in power supply ok. please help. thanks

  • sergioaguirr Oct 08, 2009

    this is not a lcd projection its a lcd flat screen. no picture but sound ok. voltages in power supply ok model kdl-40v4100

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I would remove the rear panel ,and pull boards out enough to look under them.Look for a cold solder joint holding a heat sink in.These are not done on the assembly line very well,and this could be the problem.You can clean and resolder the heat sink leg back to the board.I hope this is helpful,if so,let us know,thank you.

Posted on Oct 09, 2009

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IF you have sound then power supply is ok. sounds like it is time to replace the bulb.

Posted on Oct 08, 2009

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Most likely a faulty IC or STK depending on what type you have. Capacitors do get overheated easily now-days due to being made cheaper and less room for air movement in the newer style sets.

Posted on Oct 08, 2009

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http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
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