FYI.. Vizio M49-C1

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  • 102mm
    Senior Member
    • Dec 2013
    • 181
    • us
    #1

    FYI.. Vizio M49-C1

    Just an FYI.. The voltages labeled at CN9101/CN9102 on the power supply (ADTVE1825AC7) are incorrect. all the +12V are actually 19V. I spent hours trying to figure this out and even swapping out another PS that had matching pin outputs with the correct 12V. a pic of the board from shopjimmy attached

    Found this TV at the dump, new with stickers. the screen would work for a few minutes then go all white or red. Turns out the LVDS cable was not completely connected in the TCON causing it to act up. A strip of tape fixed all my issues, it's been running well since then.


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    2 ea - Samsung 52"
    Samsung 60"
    Tags: None
    • tvtimmy
      Badcaps Legend
      • Mar 2015
      • 1160
      • usa
      #2
      Re: FYI.. Vizio M49-C1

      Awesome! Will file this under fixed.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: FYI.. Vizio M49-C1

          Those 12V's look to done by Synchronous Rectification (MOSFET Q9111, IC9111), I wonder if there is problem in that section to make it output 19V instead of 12V. You may want to look up the spec sheet of that SMD IC9111 to see how it functions.
          http://citeseerx.ist.psu.edu/viewdoc...=rep1&type=pdf
          The MOSFET is on the low side on that board.
          Last edited by budm; 07-21-2017, 11:29 PM.
          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

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