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HI there, you advised me to replace power supply Board 3842-0032-0185 on my VIZIO VP42 HDTV. I found the part with the number above, but it has a different name for it and its also cheap. I searched for a Power Supply Board and found something different. Vizio P42HD 3501Q00055A (expensive). I haven't opened the TV yet, will do tonight, but which part were referring to since im a bit confused now.

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  • audelb Dec 11, 2009

    Well, thanks. The reason I brought this is because someone suggested to replace the Power Supply Board but provided the number for the Audio board. But here are the symptoms on my Vizio so you can get an idea.



    I see the amber light on the power button when I connect to power. After I press the power button, I get a green light and I can hear the relays clicking. I get no picture at all. And not sure about sound since I can be positive if the volume control is actually working.


    As of now, I unplugged any devices from the tv. I press the menu, volume, channel buttons and see nothing on the screen. I expect to see a blue screen, or the selected input on display. I see, nothing at all on the display.


    I just get the black screen, not sure if the backlight is turning on or not, hard to tell.


    Also connected my laptop to the VGA port and connected sound.Pushed the INPUT button several times to see if I can get to the right input and hear sound, but still no luck. Can't tell if the backlight is on because screen remains black.


  • audelb Dec 11, 2009

    Well, thanks. The reason I brought this is because someone suggested to replace the Power Supply Board but provided the number for the Audio board. But here are the symptoms on my Vizio so you can get an idea.



    I see the amber light on the power button when I connect to power. After I press the power button, I get a green light and I can hear the relays clicking. I get no picture at all. And not sure about sound since I can be positive if the volume control is actually working.


    As of now, I unplugged any devices from the tv. I press the menu, volume, channel buttons and see nothing on the screen. I expect to see a blue screen, or the selected input on display. I see, nothing at all on the display.


    I just get the black screen, not sure if the backlight is turning on or not, hard to tell.


    Also connected my laptop to the VGA port and connected sound.Pushed the INPUT button several times to see if I can get to the right input and hear sound, but still no luck. Can't tell if the backlight is on because screen remains black.

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The 3501Q00055A is the power supply board. The 3842-0032-0185 board is for sound. You need to get the 3501Q00055A board if you need to replace the power board.

Posted on Dec 11, 2009

  • Jyackle5
    Jyackle5 Dec 11, 2009

    Does not sound like the power board is bad then. Sounds like the video board has gone out on you sence you are geting power with the light but no picture.

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