Question about JVC AV27WF36 TV

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Tv wont turn on at all av-27wf36 - JVC AV27WF36 TV

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  • rjblair65 Mar 24, 2011

    Its is not the fuse, that was one of the first things i checked

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  • JVC Master
  • 2,098 Answers

Hi Rjblair65,
If the unit have no led light in the front panel after pushing the power on button and in the remote control, the fault is in the power supply section where the power cord is connected. Check the fuse first if blew replaced it with a new one(same voltage and current ratings). Let me know what you discover to assist you further.
Jdvillanueva

Posted on Mar 23, 2011

  • Jdvillanueva
    Jdvillanueva Mar 24, 2011

    If the fuse is intact you have to confirm if the voltage regulator circuitry is working. Check the B+ across the 160/200v electrolytic capacitor in the output of the chopper transformer. If there is no B+ in this test point the voltage regulator section was faulty. This is mostly caused by defective Voltage regulator IC (STR series) and some of the fusible resistor.



    If the B+ is present across the 160/200V electrolytic cap, the fault is in the horizontal circuitry which is the common defective parts is the H-out transistor and its fusible resistor.



    Also, bad solder joints (crack/dry/cold solder) is going to consider most especially in the B+ line, regulator section, and in the horizontal section.



    If you don't have necessary tools and test instrument and can't troubleshoot the symptom, I would advice you to look for a qualified technician to isolate the problem.



    Note : this fault needs the skills of an expert if you are going to fix it yourself. Don't attempt to work in the power supply if you don't know safety precaution of handling it.



    Hope I helped you.



    Have a nice day!



    Thanks for using Fixya.

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