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My TV won't turn on I have unplug it and plugged it back in but it won't turn on.

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  • shortymoore1 Apr 03, 2011

    There is no red light, what happened when I plugged it back in a blue light came on for a few sec and than nothing. The model is Hitachi 55VS69A

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  • Hitachi Master
  • 2,098 Answers

Hi,
May I know if it has a led light in the front panel or totally dead seat. And if you can give us the brand and model of your tv much better to assist you further.
Jdvillanueva

Posted on Apr 03, 2011

  • Jdvillanueva
    Jdvillanueva Apr 03, 2011

    This is an indication of out-of-regulation in the power supply section. The very
    common caused of this fault was the dried-up/leaky electrolytic
    capacitor
    in that section. It
    will drop the supply from normal voltage and
    will disable the unit. Sometimes it has a bulged/dome at the top but not all, it is better
    that you have a capacitor
    checker/tester
    to determine
    its condition. Also, bad
    solder joints
    can produce the
    same symptom, it is hard to spot, you should use table lamp/portable lamp for
    finding the cold solder. Another reason of fault was a missing output supply which caused open fuse/fusible resistor in series with the output of regulator IC/transistor, shorted/openRegulator IC/transistor,
    shorted zener diode(all
    are in the power supply section) and the microcontroller.
    Best that you check the output voltage of each regulator to determine where the
    fault came from and narrow the job.



    If you don't have necessary tools
    and test instruments
    , and can't do the job yourself, I would advice you to
    look for a professional to troubleshoot the problem. Don't
    attempt to work in the power supply if you don't know the safety precaution of handling it, there some stored
    electricity enough to hurt you with a little mistake only.



    Also check if your unit is under warranty /extended warranty,
    avail it because the manufacturer of your unit will fix it for free. Don't open
    the back panel, this will void the warranty.



    Hope I helped you.


    Have a nice day!


    Thanks for using Fixya.

    This is an indication of out-of-regulation in the power supply section. The very common caused of this fault was the dried-up/leaky electrolytic capacitor in that section. It will drop the supply from normal voltage and will disable the unit. Sometimes it has a bulged/dome at the top but not all, it is better that you have a capacitor checker/tester to determine its condition. Also, bad solder joints can produce the same symptom, it is hard to spot, you should use table lamp/portable lamp for finding the cold solder. Another reason of fault was a missing output supply which caused open fuse/fusible resistor in series with the output of regulator IC/transistor, shorted/openRegulator IC/transistor, shorted zener diode(all are in the power supply section) and the microcontroller. Best that you check the output voltage of each regulator to determine where the fault came from and narrow the job.

    If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in the power supply if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.

    Also check if your unit is under warranty /extended warranty, avail it because the manufacturer of your unit will fix it for free. Don't open the back panel, this will void the warranty.

    Hope I helped you.

    Have a nice day!

    Thanks for using Fixya.

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