Sceptre x320bv-hd Megmeet mp116

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  • tom thumb
    Senior Member
    • Jul 2013
    • 66
    • USA
    #1

    Sceptre x320bv-hd Megmeet mp116

    Ok so here is what it is doing
    Turns on but the sceptre logo has a slight flicker when starting
    Tv runs for about a minute with perfect picture then screen keeps going on and off

    5v line =5
    pson =4.63
    12v = 11.7
    24v = 24.0
    When tv goes off the 5 volt line and pson are fine but both the 12v and 24v
    line are turning off and on and the screen says no signal as if it is resetting

    So is power supply to blame or is main board shot.
    It acts up within a minute so not sure if heat is a factor but I am not sure if this is a sign of a bad cap or not
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Sceptre x320bv-hd Megmeet mp116

      Post good clear pictures of the boards, it sounds like the power supply board problem in the 12V/24V SMPS section due to bad solder joints, bad caps, or the inverter board is drawing too much current, etc.
      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

        • tom thumb
          Senior Member
          • Jul 2013
          • 66
          • USA
          #3
          Re: Sceptre x320bv-hd Megmeet mp116

          Sorry cant send pics so i will have to just wing it all caps appear fine replaced a couple of them anyway and still same problem and problem still exists if I disconect panel lvds
          One cap was replaced before and it was soldered on the bottom of the board
          instead of through the holes but that should still not make any differance

            Comment

            • tom thumb
              Senior Member
              • Jul 2013
              • 66
              • USA
              #4
              Re: Sceptre x320bv-hd Megmeet mp116

              Ok Ill try upload pics on dialup
              Attached Files
              Last edited by tom thumb; 06-03-2014, 11:41 AM.

                Comment

                • tom thumb
                  Senior Member
                  • Jul 2013
                  • 66
                  • USA
                  #5
                  Re: Sceptre x320bv-hd Megmeet mp116

                  Update If unplugged for awhile to discharge caps it will turn on and keep working
                  turn it off and on several times and it works fine

                  But unplug it and plug it in b4 caps are fully discharged and the pic goes off and on within a minute

                    Comment

                    • tom thumb
                      Senior Member
                      • Jul 2013
                      • 66
                      • USA
                      #6
                      Re: Sceptre x320bv-hd Megmeet mp116

                      Solved----- Recap pwr supply and now working fine

                        Comment

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