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    Bn44-00604f

    HI

    I have a power suply BN44-00604F whit the R9151 and R9152 blow could some one tell me were i can find the service manual for this board so i could see the value of the Resistence ?

    Thanks
    Nuno

    #2
    Re: Bn44-00604f

    After translating another site I think they could be 2 ohm each
    h++ps://translate.google.com/translate?hl=en&sl=ar&u=http://www.amwajsat.net/vb/showthread.php%3Fp%3D78196&prev=search

    Comment


      #3
      Re: Bn44-00604f

      Hi

      Thanks a lot i will try and report latter

      Thanks
      Nuno

      Comment


        #4
        Re: Bn44-00604f

        Hi

        i have put the 2 ohm and still no power on the tv i have found that 2 leds are direct so i put the 5 diodo 1n4007 on it and still the same thing .
        the red led blinks 5 times .
        Whit the main board disconect from the power suplly board wen i conect the power cord on the leds panel iluminates for a second or so and goes off so the problem is in the power board

        could some one help me out
        and iff some one as the manual for this board .

        Thanks

        Comment


          #5
          Re: Bn44-00604f

          Can we see the pictures of the whole back side of the TV and the pictures of the boards?
          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


            #6
            Re: Bn44-00604f

            HI

            Here it is.



            PS. I just see that i have post on the rong side off the forum if some moderator whants could put on the right side

            Thanks
            Attached Files

            Comment


              #7
              Re: Bn44-00604f

              HI

              NO ONE ???


              THANKS

              Comment


                #8
                Re: Bn44-00604f

                That power supply/LED driver board is known for having poor soldering joints on the power transformer legs, so I would at least resolder all the transformer leg.
                BTW, the two 2 Ohms resistors, were they burnt out or what was wrong with them?
                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


                  #9
                  Re: Bn44-00604f

                  Hi

                  i have already check de soldering and they are all ok .
                  as for the 2 ohm resistors they were blowed becouse they touch in the frame and they blow .

                  i have put 2 new ones and it as the same problem led light blinks 5 times the led bars light for a second wen i plug in the power cable and goes down so there is something in the board but i cant find it

                  Comment


                    #10
                    Re: Bn44-00604f

                    i have measured the CNL802 that conects the cable to the leds and whit the plug on it or off it give me the same values

                    15_ 1F2 0V
                    11_ 1- 0V
                    9_ 2- 0V
                    5_ 3- 0V
                    3_ 4- 92.6V
                    16_ 1F1 0V
                    12_ 1+ 179.2V
                    10_ 2+ 0V
                    4_ 4+ 0V

                    This was measured whit the main board disconect and ground directo on the PSU

                    Thanks
                    Attached Files

                    Comment


                      #11
                      Re: Bn44-00604f

                      Originally posted by mi16rs View Post
                      i have measured the CNL802 that conects the cable to the leds and whit the plug on it or off it give me the same values

                      15_ 1F2 0V
                      11_ 1- 0V
                      9_ 2- 0V
                      5_ 3- 0V
                      3_ 4- 92.6V
                      16_ 1F1 0V
                      12_ 1+ 179.2V
                      10_ 2+ 0V
                      4_ 4+ 0V

                      This was measured whit the main board disconect and ground directo on the PSU

                      Thanks
                      That feeding Voltage of 179VDC (at 12 1+ pin) to the Anode of the LED strings indicate the load is too light or you have open circuit in the LED string or in the LED Cathode current return path.
                      If you look at the Voltage chart as printed on the board, it shows VLED feeding Voltage of 145V with 240mA max current, that is the output with load, without the load the output will go up too high and will trip the shutdown circuit.
                      Do you get the same 179VDC if the LED connector is not in place?
                      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


                        #12
                        Re: Bn44-00604f

                        Hi

                        yes whit the conector on or off i get the same value

                        Comment


                          #13
                          Re: Bn44-00604f

                          That means it is not seeing the load, which can be the open circuit in the LED string, or open circuit in the current return path for the LED which is on that power supply board.
                          BTW, for those two 2 Ohms resistors which are connected in parallel to form 1 Ohm resistance, something must have been drawing too much current through them to cause them to burn up.
                          Are you 100% sure that the whole LED string which are consisting of 5 LED strips (9 LEDs per STRIP, 45 LEDs total) and connected in series to form one large LED string are good for sure?
                          Last edited by budm; 06-09-2017, 02:08 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


                            #14
                            Re: Bn44-00604f

                            yes im 100% sure all the led strip are ok apart from the 2 ones that i have put the diods
                            the 2 Ohms resistors like i sayd they burn up becouse the board touch the frame by my fault as i didnt screw the board and wen i lift the panel it slide and touch the frame

                            Comment


                              #15
                              Re: Bn44-00604f

                              hi

                              Can someone tell me the values of the resistors rm817 and dm803 are located on the underside of the MOSFET

                              Thank you

                              Comment


                                #16
                                Re: Bn44-00604f

                                Rm817 = 0Ω, DM = 1N4007
                                Last edited by R_J; 06-29-2018, 10:06 AM.

                                Comment


                                  #17
                                  Re: Bn44-00604f

                                  Originally posted by R_J View Post
                                  Rm817 = 0Ω, DM = 1N4007
                                  Thank you

                                  Comment


                                    #18
                                    Re: Bn44-00604f

                                    Ciao
                                    Ho anch'io un problema con la scheda in questione, dopo svariate prove ho trovato il transistor Q9051 in corto solo che non si legge piĆ¹ nulla, mi potreste aiutare.
                                    Grazie

                                    Comment


                                      #19
                                      Re: Bn44-00604f

                                      Hi ilija, did you solve this issue as I have the same problem with the LED blinking 5 times. The manual button on the back of the TV works as the time makes some sounds but there is no picture.

                                      Comment


                                        #20
                                        Re: Bn44-00604f

                                        i have the voltage that feed led 217 v ( between the two pins that goes to the leds) is that ok ?

                                        Comment

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