Question about ViewSonic N3251w 32 in. LCD HDTV

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Sound with no picture..backlight working

I have a similar problem. Not able to view any input or the Menu screen. On the way to buy new TV but would like to fix this one if possible....Been a good set for the past 2 years!

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  • wfrostick Aug 31, 2009

    This is my previous post...

    Jaime867
    Jaime867

    Rank: Guru
    Rating: 88%, 897 votes
    This failure could be due to a backlight inverter board or the power supply is not providing the 24 volts to it.
    The way to fix it is by measuring the voltages from the power supply to the backlight inverter board, if the voltage is present then the backlight inverter board is defective and will need to be replace. If the voltage is lower then 20 volts, then is a power supply failure.
    Click here to find the backlight inverter board.
    Let me know if you need further assistance. I repair power supplies for all LCD models.


    I replaced the inverter and have the same symptoms. Sound, backlight, no picture, menu. Can you tell me where to check the voltage on the power supply feeding the inverter?

    Thanks

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This failure could be due to a backlight inverter board or the power supply is not providing the 24 volts to it.
The way to fix it is by measuring the voltages from the power supply to the backlight inverter board, if the voltage is present then the backlight inverter board is defective and will need to be replace. If the voltage is lower then 20 volts, then is a power supply failure.
Click here to find the backlight inverter board.
Let me know if you need further assistance. I repair power supplies for all LCD models.

Posted on Aug 11, 2009

  • Jaime Hernandez Sep 05, 2009

    Check this PDF file to know where to check for the 24 volts if your power supply is the FSP212-3F02.

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