possible red blinking light code, no power on samsung led tv

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  • pctektgg
    Member
    • Aug 2014
    • 20
    • USA

    #1

    possible red blinking light code, no power on samsung led tv

    I have a samsung led model un40d6000sfxza, that as of last night it simply turn off on its own and now it has no power and seems likes its trying to tell me something with blinking red light code.

    The sequence goes like this: on, on, very slight pause, on, on, very slight pause, on, on, very slight pause, on, on, very slight pause, on, on, after this 10th count it goes to a longer pause like its starting all over with the 2 at a time blinks sequence up to 10 counts again and starts all over.

    I removed back panel and visually the power board looks good, I see no burnt components, no leaking/bulging caps but thats all I currently know what to do. Im not a tv tech but I can solder and swap boards and take tv's and electronics apart just not alot experience in electronics in terms of testing parts with a meter and such. I do have a volt meter btw.

    But with directions from someone maybe I can follow if told how too. Anyone know what the blinking lights mean or know whats up? thanks
    Last edited by pctektgg; 04-22-2015, 06:05 PM.
  • sordids999
    Badcaps Legend
    • May 2013
    • 2149
    • uk

    #2
    Re: possible red blinking light code, no power on samsung led tv

    Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

    Comment

    • pctektgg
      Member
      • Aug 2014
      • 20
      • USA

      #3
      Re: possible red blinking light code, no power on samsung led tv

      Ok doing that now thanks....

      heres the pictures there's 2 each for the power and main board, and one for that tcon cable I think that's what its called.

      Also got a question about fuses I see typically in tvs like this those cartridge white ceramic type fuses like this power board has how would you know if they are bad it will have a burnt black appearance to it right? It wont be mighty white right? Thanks
      Attached Files
      Last edited by pctektgg; 04-22-2015, 06:21 PM.

      Comment

      • newtothis
        Badcaps Legend
        • Mar 2013
        • 1556
        • england

        #4
        Re: possible red blinking light code, no power on samsung led tv

        Have a multimeter to hand?

        Comment

        • pctektgg
          Member
          • Aug 2014
          • 20
          • USA

          #5
          Re: possible red blinking light code, no power on samsung led tv

          Originally posted by newtothis
          Have a multimeter to hand?
          Yes I do.

          I was just readying another post on here a guy last year has same model as mine and his fix was the main board and not the power board.

          Comment

          • newtothis
            Badcaps Legend
            • Mar 2013
            • 1556
            • england

            #6
            Re: possible red blinking light code, no power on samsung led tv

            Well we will go through diagnosis of the PSU first anyway.

            As to testing fuses you would use ohm setting and check by testing across the fuse, >1ohm bad and <1ohm a good fuse.

            Ok set your DMM to DCV and test each pin on connector CN1. List the results like this :

            STB - 0v
            5vS - 5v

            etc
            etc

            Comment

            • newtothis
              Badcaps Legend
              • Mar 2013
              • 1556
              • england

              #7
              Re: possible red blinking light code, no power on samsung led tv

              Sorry forgot to say, Black probe to chassis (screw will do) and red probe to each pin in turn

              Comment

              • pctektgg
                Member
                • Aug 2014
                • 20
                • USA

                #8
                Re: possible red blinking light code, no power on samsung led tv

                Originally posted by newtothis
                Well we will go through diagnosis of the PSU first anyway.

                As to testing fuses you would use ohm setting and check by testing across the fuse, >1ohm bad and <1ohm a good fuse.

                Ok set your DMM to DCV and test each pin on connector CN1. List the results like this :

                STB - 0v
                5vS - 5v

                etc
                etc
                Hmm so Im looking for a component on the power board that says cn1 right? I don't think I see one

                Comment

                • newtothis
                  Badcaps Legend
                  • Mar 2013
                  • 1556
                  • england

                  #9
                  Re: possible red blinking light code, no power on samsung led tv

                  Outlined
                  Attached Files

                  Comment

                  • pctektgg
                    Member
                    • Aug 2014
                    • 20
                    • USA

                    #10
                    Re: possible red blinking light code, no power on samsung led tv

                    Originally posted by newtothis
                    Outlined
                    Sorry the tv has to be plugged in and with the red front lights flashing right? btw the picture you posted is not the board i have not sure if your helping someone else and you thought I was them.

                    In the picture you gave me I see a similar connector on this board but it doesn't say cn1 says another number and in writing it has voltage readings of 1,3,5,7 etc pins it should be reading Im assuming, nothing that says stb like you said.
                    Last edited by pctektgg; 04-22-2015, 07:11 PM.

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: possible red blinking light code, no power on samsung led tv

                      https://www.badcaps.net/forum/attach...2&d=1429748154
                      Connector CNM803A.
                      The exposed pins on top are ODD number pins, the EVEN number pins are on the bottom side of the board. The white triangle is pin 1.
                      The list of the pin names are printed on the 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

                      • pctektgg
                        Member
                        • Aug 2014
                        • 20
                        • USA

                        #12
                        Re: possible red blinking light code, no power on samsung led tv

                        Originally posted by budm
                        https://www.badcaps.net/forum/attach...2&d=1429748154
                        Connector CNM803A.
                        The exposed pins on top are ODD number pins, the EVEN number pins are on the bottom side of the board. The white triangle is pin 1.
                        The list of the pin names are printed on the board.
                        Yeah I figure thats the connector he was trying to say. So i have to remove the board from tv and test all this without power and out of tv right?

                        Comment

                        • pctektgg
                          Member
                          • Aug 2014
                          • 20
                          • USA

                          #13
                          Re: possible red blinking light code, no power on samsung led tv

                          Check out this video same exact model code I have and same symptoms with the lights flash sequence, the fix in the video was a new led backlight part, one of the led's was burnt. Does one single burnt led cause it to not turn on?

                          https://www.youtube.com/watch?v=xsQQuiP3KAE

                          Comment

                          • newtothis
                            Badcaps Legend
                            • Mar 2013
                            • 1556
                            • england

                            #14
                            Re: possible red blinking light code, no power on samsung led tv

                            Sorry yes I was dealing with other threads too.

                            No it has to be in the tv connected and powered on

                            Comment

                            • newtothis
                              Badcaps Legend
                              • Mar 2013
                              • 1556
                              • england

                              #15
                              Re: possible red blinking light code, no power on samsung led tv

                              Originally posted by pctektgg
                              Check out this video same exact model code I have and same symptoms with the lights flash sequence, the fix in the video was a new led backlight part, one of the led's was burnt. Does one single burnt led cause it to not turn on?

                              https://www.youtube.com/watch?v=xsQQuiP3KAE
                              Yes it can if its failed open.

                              We can figure it out from voltage outputs etc

                              Comment

                              • pctektgg
                                Member
                                • Aug 2014
                                • 20
                                • USA

                                #16
                                Re: possible red blinking light code, no power on samsung led tv

                                Originally posted by newtothis
                                Yes it can if its failed open.

                                We can figure it out from voltage outputs etc
                                Ok but the pins underneath the board do we need to test those too only the top are exposed?

                                Comment

                                • newtothis
                                  Badcaps Legend
                                  • Mar 2013
                                  • 1556
                                  • england

                                  #17
                                  Re: possible red blinking light code, no power on samsung led tv

                                  I use a pin in the connector itself at the side of each wire then test against that

                                  Comment

                                  • pctektgg
                                    Member
                                    • Aug 2014
                                    • 20
                                    • USA

                                    #18
                                    Re: possible red blinking light code, no power on samsung led tv

                                    Anyone here live can continue in helping find out what component is messed up on my tv....

                                    Comment

                                    • newtothis
                                      Badcaps Legend
                                      • Mar 2013
                                      • 1556
                                      • england

                                      #19
                                      Re: possible red blinking light code, no power on samsung led tv

                                      Yes when we get those voltages off the connector

                                      Comment

                                      • pctektgg
                                        Member
                                        • Aug 2014
                                        • 20
                                        • USA

                                        #20
                                        Re: possible red blinking light code, no power on samsung led tv

                                        OK so I have to plug in and turn on the tv right? actually tv wont necessary turn on because right away from plugging it in the red light bottom right corner of the tv will start the light code sequence but maybe that's enough to test.

                                        The black probe I put against a metal screw or chassis right then touch each pin and write down the readings right?

                                        Comment

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