Vizio E390i-A1 (Blank screen, sound works, backlight works)

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  • isfoster89
    Noob
    • Dec 2013
    • 8
    • United States

    #1

    Vizio E390i-A1 (Blank screen, sound works, backlight works)

    Thank You in advance for any help or advice. The title explains it all. I'm tv illiterate... Which is ironic because you don't read TV!
    Not much help but good for a few laughs now and again.
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Vizio E390i-A1 (Blank screen, sound works, backlight works)

    Post the pictures of the back side of the TV. The problem can be blown fuse on the T-CON board or the T-CON is not getting the voltage from the main board.
    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

    • davidtv
      New Member
      • Mar 2014
      • 1
      • United States

      #3
      Re: Vizio E390i-A1 (Blank screen, sound works, backlight works)

      I had the same problem on my Vizio VW32LHDTV10A

      Problem lies on the main board, specifically the voltage regulators used by the manufacturer (U8 for example), these are notoriously bad parts and go on the fritz and do not allow the proper amount of voltage to flow correctly. Sound will work as well as the backlight but ultimately there is no picture. I had this problem intermittently for 6 months. I did everything I could and did not want to spend the $50 to replace the board. I even replaced capacitors galore. No luck until i started looking at the voltage regulators. Re soldered most of them and voila problem disappeared. Its been about 3 weeks now and so far so good.

      Comment

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