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    Re: Samsung ue49mu6120

    Originally posted by lotas View Post
    There may be a problem when removing or installing spi flash 25q40, the components moved around this memory (resistors ...), if you used a soldering station with hot air, the flash itself is not working properly, there may be a problem in the T-Con firmware (25Q80), the problem is in panels...
    we have tried with a main board from another television and everything works correctly, so we believe it is a firmware problem of this board.
    the memory has been removed with a jbc RMSE-2QF station and all the components are perfect around it.
    I don't know if you can guide me further.
    thank you

    Comment


      Re: Samsung ue49mu6120

      There are four firmware chips on this board, these are two spi flash - 25Q40, 25Q80, one eeprom 24C512 and one eMMC.

      Comment


        Re: Samsung ue49mu6120

        Originally posted by lotas View Post
        There are four firmware chips on this board, these are two spi flash - 25Q40, 25Q80, one eeprom 24C512 and one eMMC.
        do you have the firmware to test the 25q80 and the 24c512?

        It is the last test that I have left to do, I am desperate.

        Before reprogramming the 25q40 chip it did not do anything completely dead and when reprogramming it there is standby and it blinks but no image or backlight.

        Thank you very much for your time and dedication, I am very grateful

        Comment


          Re: Samsung ue49mu6120

          But they are unlikely to help, the T-Con settings and everything related to your panel (diagonal, manufacturer, specific settings ...) are stored in the 25Q80, try replacing the 25Q40 with another one.

          Comment


            Re: Samsung ue49mu6120

            Originally posted by Alberto View Post



            Before reprogramming the 25q40 chip it did not do anything completely dead and when reprogramming it there is standby and it blinks but no image or backlight.
            Usually such behavior, as I already wrote, does not match the software version in SPI Flash (25Q40) and in eMMC.

            Comment


              Re: Samsung ue49mu6120

              Originally posted by lotas View Post
              But they are unlikely to help, the T-Con settings and everything related to your panel (diagonal, manufacturer, specific settings ...) are stored in the 25Q80, try replacing the 25Q40 with another one.
              i tried with a new w25q40 chip and same problem.
              convinced that the problem is the firmware because there is no response signal on 25q40 with oscilloscope

              Comment


                Re: Samsung ue49mu6120

                Try another option.
                Attached Files

                Comment


                  Re: Samsung ue49mu6120

                  Originally posted by Alberto View Post
                  i tried with a new w25q40 chip and same problem.
                  convinced that the problem is the firmware because there is no response signal on 25q40 with oscilloscope
                  I understand everything perfectly, the fact is that when you turn on the TV, the processor checks the checksum with the spi flash and with the emmc area, and if it does not match, then exactly the same problem as yours will come out.

                  Comment


                    Re: Samsung ue49mu6120

                    Originally posted by lotas View Post
                    Try another option.
                    tested and with this file it gives standby slow flashes

                    Comment


                      Re: Samsung ue49mu6120

                      Originally posted by Alberto View Post
                      tested and with this file it gives standby slow flashes
                      Let's try different software versions.

                      Comment


                        Re: Samsung ue49mu6120

                        Hello,
                        I have the same problem with my
                        SAMSUNG UE40MU6470UXRU .Can you help me ?
                        Thank you
                        MB: BN41-02568B
                        LCD: CY-KK040HGNV3V
                        the number on the sticker: BN94-11958K
                        Attached Files

                        Comment


                          Re: Samsung ue49mu6120

                          Originally posted by Shwed84 View Post
                          Hello,
                          I have the same problem with my
                          SAMSUNG UE40MU6470UXRU .Can you help me ?
                          Thank you
                          MB: BN41-02568B
                          LCD: CY-KK040HGNV3V
                          the number on the sticker: BN94-11958K
                          Try.
                          Attached Files

                          Comment


                            Re: Samsung ue49mu6120

                            Originally posted by lotas View Post
                            Let's try different software versions.
                            Problem solved. I have put in a new main board and everything works fine.
                            Thanks for all the help and interest shown Lotas.
                            Thank you

                            Comment


                              Re: Samsung ue49mu6120

                              Hello lotas please fix my dump
                              Samsung ue55mu6270uxzg
                              Thank you in advance !
                              Attached Files

                              Comment


                                Re: Samsung ue49mu6120

                                Originally posted by Jovica123 View Post
                                Hello lotas please fix my dump
                                Samsung ue55mu6270uxzg
                                Thank you in advance !
                                Try.
                                Attached Files

                                Comment


                                  Re: Samsung ue49mu6120

                                  Thank you,it is working !

                                  Comment


                                    Re: Samsung ue49mu6120

                                    Maybe You can check this attached file good or not.
                                    BN41-02258A, UE55KU6070
                                    Attached Files
                                    Last edited by bmt_hr; 03-17-2023, 12:13 PM.

                                    Comment


                                      Re: Samsung ue49mu6120

                                      HI dear friend Lotas . can you help me?!!!
                                      iI have a samsung UE49MU6205K and no power on , can be the same??
                                      Thanks

                                      Comment


                                        Re: Samsung ue49mu6120

                                        i forgote the file ,
                                        Attached Files

                                        Comment


                                          Re: Samsung ue49mu6120

                                          Originally posted by joaoubina View Post
                                          i forgote the file ,
                                          Your firmware (Dump) is working!

                                          Also try this dump, if it doesn't start with it, then you have another problem.
                                          Attached Files
                                          Last edited by lotas; 03-21-2023, 08:58 AM.

                                          Comment

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