Vizio m550nv orang light and no turn on

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  • audiofreak19
    Badcaps Veteran
    • Apr 2013
    • 556
    • usa

    #1

    Vizio m550nv orang light and no turn on

    So I just picked up a vizio m550nv led tv that when plugged in the orange vizio light turns on but the tv won't turn on. I know other vizio a had this problem and it was a EPROM gone bad. Some say a voltage regulator. How can I test these things cause I'm trying not to buy a new main.
    Attached Files
  • audiofreak19
    Badcaps Veteran
    • Apr 2013
    • 556
    • usa

    #2
    Re: Vizio m550nv orang light and no turn on

    Hey so I looked at the main board some more and I found this what I think is a smd capacitor but I don't know what the value or the part number of this. The number on the board is c285. Is there a place I can look up what kind of capacitor this is so ican try replacing it.
    Attached Files

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #3
      Re: Vizio m550nv orang light and no turn on

      If you measure it with the Ohm meter, does it show really low resistance? These MLCC will usually shorted out.
      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

      • audiofreak19
        Badcaps Veteran
        • Apr 2013
        • 556
        • usa

        #4
        Re: Vizio m550nv orang light and no turn on

        i havent tried to meter it yet i just saw the one side of it was melted down a little bit.

        Comment

        • audiofreak19
          Badcaps Veteran
          • Apr 2013
          • 556
          • usa

          #5
          Re: Vizio m550nv orang light and no turn on

          Hey I just metered it and it read00.1. Does that mean it is shorted out. Cause it looks severely messed up. If so how do I find the part number of it to get a replacement

          Comment

          • audiofreak19
            Badcaps Veteran
            • Apr 2013
            • 556
            • usa

            #6
            Re: Vizio m550nv orang light and no turn on

            That was metered with the board disconnected completely from the tv

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Vizio m550nv orang light and no turn on

              00.1 Ohm? KOhm? or it shows the same reading as when you short the two probes together? if it is the same, then it is shorted out, MLCC failed in shorted out mode.
              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

              • audiofreak19
                Badcaps Veteran
                • Apr 2013
                • 556
                • usa

                #8
                Re: Vizio m550nv orang light and no turn on

                Yea it's showing the same as when the probes touched. Awesome hopefully this will save me 150 bucks. How do I find out what kind of smd cap to replace it with

                Comment

                • budm
                  Badcaps Legend
                  • Feb 2010
                  • 40746
                  • USA

                  #9
                  Re: Vizio m550nv orang light and no turn on

                  That will be the hard part. Can we see bigger area around the cap to see if it is high value (10~20uf) filter cap or low value (<1 uf).
                  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

                  • audiofreak19
                    Badcaps Veteran
                    • Apr 2013
                    • 556
                    • usa

                    #10
                    Re: Vizio m550nv orang light and no turn on

                    Ok here are some Picts of the board and some of the other caps as well. I metered other caps like it out of curiosity and they read the same except for I think two of them which on the meter read .638 or 0.L. So I'm guessing all the ones that read 00.1 are bad. Now the picture with the caps that look like their good metered the same but don't look messed up. I also metered some even smaller caps and they read the same thing 00.1. And show I be metering this while it's hooked up to the tv or separate from the tv.
                    Attached Files

                    Comment

                    • audiofreak19
                      Badcaps Veteran
                      • Apr 2013
                      • 556
                      • usa

                      #11
                      Re: Vizio m550nv orang light and no turn on

                      For some reason I can only post one at a time
                      Attached Files

                      Comment

                      • audiofreak19
                        Badcaps Veteran
                        • Apr 2013
                        • 556
                        • usa

                        #12
                        Re: Vizio m550nv orang light and no turn on

                        .
                        Attached Files

                        Comment

                        • audiofreak19
                          Badcaps Veteran
                          • Apr 2013
                          • 556
                          • usa

                          #13
                          Re: Vizio m550nv orang light and no turn on

                          ,
                          Attached Files

                          Comment

                          • audiofreak19
                            Badcaps Veteran
                            • Apr 2013
                            • 556
                            • usa

                            #14
                            Re: Vizio m550nv orang light and no turn on

                            '
                            Attached Files

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #15
                              Re: Vizio m550nv orang light and no turn on

                              The TV should not be plugged in when do the resistance measurement. I would remove that suspected cap and take the resistance reading off the board. The circuit will usually has caps in parallel. When thew cap is removed, you should then take the resistance reading where the two pads are to see what resistance you get.
                              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

                              • audiofreak19
                                Badcaps Veteran
                                • Apr 2013
                                • 556
                                • usa

                                #16
                                Re: Vizio m550nv orang light and no turn on

                                So I have another cap that looks identical to the one I have to replace. Since there are no markings on these caps I don't think there is a way to find out what kind it is. But another question. How do I know which side is pos and neg. I have one soldered in and I'm nervous to hook it up not knowing if its gonna mess it up more.

                                Comment

                                • budm
                                  Badcaps Legend
                                  • Feb 2010
                                  • 40746
                                  • USA

                                  #17
                                  Re: Vizio m550nv orang light and no turn on

                                  It is MLCC (Multi-Layer-Ceramic-Cap), no polarity. The size will not really tell you the capacitance. Do you have cap meter to measure its capacitance? Does it test out as shorted?
                                  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

                                  • audiofreak19
                                    Badcaps Veteran
                                    • Apr 2013
                                    • 556
                                    • usa

                                    #18
                                    Re: Vizio m550nv orang light and no turn on

                                    I don't have a cap meter. But it def tested as shorted. I put on ohms for few sec then switch to volts and it showed no voltage. I tried same test to another one and that one showed voltage slowly decreasing. Well I guess I will plug it up now and see what I get. Cross your fingers

                                    Comment

                                    • audiofreak19
                                      Badcaps Veteran
                                      • Apr 2013
                                      • 556
                                      • usa

                                      #19
                                      Re: Vizio m550nv orang light and no turn on

                                      Ok plugged it up and the light turned orange and then started turning white then orange then white and then orange. And kept repeating. Any ideas

                                      Comment

                                      • budm
                                        Badcaps Legend
                                        • Feb 2010
                                        • 40746
                                        • USA

                                        #20
                                        Re: Vizio m550nv orang light and no turn on

                                        Measure the voltage on it.
                                        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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