Vizio VO320E no power

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  • nodomo
    New Member
    • Sep 2014
    • 3
    • US

    #1

    Vizio VO320E no power

    First off, I have searched the forums a little bit and found lots of results for similar issues that I am having with my TV. However, I have absolutely no idea what any of the technical jargon meant. I have no experience with repairing TVs at all. The only limited experience I have is repairing XBOX 360 controllers. Please talk to me as if I know nothing about TVs besides how to turn them on and off and channel surf.

    The TV was given to me, and I took it knowing that it didn't work. I figured if I could fix it for less than $50, I'd have a nice little TV for super cheap.

    I've had it for a while, and decided to start looking into fixing it today. I took the back off of the TV, expecting to find some blown caps, but nothing looks out of the ordinary to me. There are no puffed ends on any caps, no burn marks on the power supply board, nothing. It does not turn on at all. No light or anything turns on when I click the power button.

    Here are a couple of pictures. I haven't done ANYTHING to the TV yet besides try to turn it on and take the back off.






    Where do I go from here?
    Last edited by nodomo; 09-26-2014, 07:40 PM.
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Vizio VO320E no power

    Check the main fuse first, if it tested OK <1 Ohm reading), then check the DC Voltage right at the two legs of the main filter cap (big black cap laying on its side), it should have about 160~170VDC.
    BTW, do not touch anything on the board with your hands or body.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • nodomo
      New Member
      • Sep 2014
      • 3
      • US

      #3
      Re: Vizio VO320E no power

      Awesome, thanks. But...which is the main fuse? And what do I need to check it?

      Like I said, I am completely ignorant on this subject and know little to nothing about electronics as a whole.

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Vizio VO320E no power

        White cylinder with two legs soldered to the board next to where the power cord is plugged into, T 5A N 250V printing next to it.
        You need by digital meter for testing and you will be working on the line (HOT) deadly side of the circuit so you MUST be real careful!
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

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