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I have a Sony KP-43T75 projection television that has no picture but the front LED flashes 4 times when I turn on the TV. I have the board out but need some guidance on what chips to check and/or replace. I have resources that can remove and install new IC's if needed.

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  • supergen Sep 12, 2010

    Thanks. I ordered the manual and we've located the parts - (IC1509(V out) is broken.
    Q1505(V Pulse Buffer) is broken) and have ordered them.

    Is there a trick to getting the High Voltage cables out? The manual mentions turning them 90 degrees counter-clockwise and then they would come out. I've tried and tried but can't get them to come out.

    Thanks

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  • Master
  • 10,515 Answers

HI,

A 4 flash shutdown is a vertical stop condition, meaning that the vertical deflection circuit is shutting down.You need to purchase the service manual from :-

http://www.tradebit.com/filedetail.php/5018366-sony-kp-43t75-kp-48s75-color

Once you have the manual, check the plus and minus 15 volt supplies on the G board. They are fused and the fuses are the easiest place to check them. If the fuses are blown, I would be thinking a bad convergence IC, as that is a common failure on these sets.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Sep 12, 2010

  • taran_2005
    taran_2005 Sep 12, 2010

    Thanks for your response!!

    It is correctly written in manual. You need unplug them from the other ends.

    Let me know,if needed further assistance.

    Hope i helped you.

    Thanks for using ' Fixya ' and have a nice day!!

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