Fluid tv model#1602103

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  • Fluidguy
    Member
    • Oct 2014
    • 12
    • Canada

    #1

    Fluid tv model#1602103

    Hey I have a fluid 46" lcd tv about 4 years old model number 1602103, tv worked one night went to turn it on and nothing. So when I first plug it in the wall i hear a click and the small indicator light turns on blue bottom corner of tv, (this light is usually red when powers off) now indicator light is always solid blue. So I hear no sound or lights on my tv, screen is black no glowing, I opened up the back of it, couldn't see any blown or leaking caps, I ordered a new power supply board pArt#mlt199tl, didn't fix any thing same thing, so when I do a voltage test I get the right voltage for all the pins except 1 pin- +5vsb, when I test that pin on the power supply board I get 2.4 volts, all the rest of the pins give me the correct volts, so what could be going on here , any one got any ideas, I bought a multimeter in case I need to do testing, I bought the power supply board form shop Jimmy's on ebay , could it be a bad board
  • Fluidguy
    Member
    • Oct 2014
    • 12
    • Canada

    #2
    Re: Fluid tv model#1602103

    Defiantly need some help

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #3
      Re: Fluid tv model#1602103

      Please read this:
      https://www.badcaps.net/forum/showthread.php?t=39740
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

      Comment

      • Fluidguy
        Member
        • Oct 2014
        • 12
        • Canada

        #4
        Re: Fluid tv model#1602103

        Here's a couple pics of what I'm dealing with, the white wire is only reading 2.4volts, the yellow wire beside below it is 5 volts
        Attached Files
        Last edited by Fluidguy; 10-23-2014, 07:56 PM.

        Comment

        • Fluidguy
          Member
          • Oct 2014
          • 12
          • Canada

          #5
          Re: Fluid tv model#1602103

          Power supply
          Attached Files

          Comment

          • Fluidguy
            Member
            • Oct 2014
            • 12
            • Canada

            #6
            Re: Fluid tv model#1602103

            White and yellow wire run to this board, then they run up to the boards on the side of tv, yes I'm sorry Im not sure on the names of parts
            Attached Files

            Comment

            • Fluidguy
              Member
              • Oct 2014
              • 12
              • Canada

              #7
              Re: Fluid tv model#1602103

              Pic of the entire back of tv
              Attached Files

              Comment

              • Fluidguy
                Member
                • Oct 2014
                • 12
                • Canada

                #8
                Re: Fluid tv model#1602103

                Ah I'll throw up another one.
                Attached Files

                Comment

                • Agent24
                  I see dead caps
                  • Oct 2007
                  • 4951
                  • New Zealand

                  #9
                  Re: Fluid tv model#1602103

                  Does the 5v Standby voltage come back up to 5v if you unplug the cable?

                  You can upload up to 10 files per post, by the way
                  "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                  -David VanHorn

                  Comment

                  • Fluidguy
                    Member
                    • Oct 2014
                    • 12
                    • Canada

                    #10
                    Re: Fluid tv model#1602103

                    No when I unplug it it has no power

                    Comment

                    • Agent24
                      I see dead caps
                      • Oct 2007
                      • 4951
                      • New Zealand

                      #11
                      Re: Fluid tv model#1602103

                      EDIT: Sorry, I completely misinterpreted your post and the photo! I thought the 5v Standby rail was only at 2.4v

                      But now I read again and realised the 5v Standby rail is on Yellow wire, this is at 5v, that's OK.

                      White wire - I am not sure what that should be. 2.4v does seem wrong, though. I suspect it should be either 0v or 5v.
                      Last edited by Agent24; 10-24-2014, 07:25 PM.
                      "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                      -David VanHorn

                      Comment

                      • budm
                        Badcaps Legend
                        • Feb 2010
                        • 40746
                        • USA

                        #12
                        Re: Fluid tv model#1602103

                        The White wire is STBY (PS_ON) signal pin from the main board feeding this power supply to turn on the PFC Voltage booster, 12V, and the 24V.
                        2.4V is OK, it is high enough. BTW: +5VSB is the standby 5V, other Voltages are swithced.
                        And please post brighter pictures of both top and bottom side of the power supply board, pictures in post 5 is dark. I am trying to read the model number on the power supply board. It looks like MEGMEET MLT??????
                        So what you need to do is to report all the Voltage as marked by all 3 connectors when the TV is OFF and when the TV is ON.
                        For example:
                        CN1:
                        +12V: OFF = 0v, ON = 12v
                        +12V: XXXXXX
                        GND: No need to report ground pin
                        GND:
                        GND:
                        +5V: XXX
                        Last edited by budm; 10-24-2014, 07:39 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

                        Comment

                        • Agent24
                          I see dead caps
                          • Oct 2007
                          • 4951
                          • New Zealand

                          #13
                          Re: Fluid tv model#1602103

                          Originally posted by budm
                          2.4V is OK, it is high enough.
                          I was going to ask what the minimum was, as I am used to ATX PSUs getting around 5v on PS_ON pin from motherboard, then I looked up ATX spec sheet and it says they use TTL logic levels for that line, so anything above 2 volts is good. I assume it's the same for these TV PSUs then?
                          "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                          -David VanHorn

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #14
                            Re: Fluid tv model#1602103

                            Roughly, yes. There's no standard but typically they drive the base of an NPN transistor which turns on an optocoupler. More than about 1V is usually enough to turn them on.
                            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #15
                              Re: Fluid tv model#1602103

                              This may help explaining how it works.
                              Attached Files
                              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

                              • Fluidguy
                                Member
                                • Oct 2014
                                • 12
                                • Canada

                                #16
                                Re: Fluid tv model#1602103

                                Ok power supply model# is megmeet mlt199tl, I've already replaced the power supply. I'm going to check all voltages when tv is on/off and I'll report back,

                                Comment

                                • Fluidguy
                                  Member
                                  • Oct 2014
                                  • 12
                                  • Canada

                                  #17
                                  Re: Fluid tv model#1602103

                                  Connector #1

                                  Black GND
                                  Brown 5v
                                  Brown 5v
                                  White 2.4
                                  Yellow 5v
                                  Brown 5v
                                  Brown5v
                                  Black GND
                                  Black GND
                                  Red 11.8

                                  2nd connector
                                  Black GND
                                  Black GND
                                  Red 24v
                                  Red24v

                                  3rd an 4th connector
                                  Red 24v
                                  Red24v
                                  Red24
                                  Red24
                                  Red24v



                                  It reads the same when off an on, as soon as I plug it in the front light turns on to blue it's supposed to be red on this tv when power is off so it's like the tv is stuck on the on position, if I press the power button when the tv is plugged into the wall nothing happens
                                  Attached Files

                                  Comment

                                  • clown
                                    New Member
                                    • Sep 2016
                                    • 3
                                    • United Kingdom

                                    #18
                                    Re: Fluid tv model#1602103

                                    Have you sort out the problem FLuidguy ? What was wrong exactly there ?

                                    Comment

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