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No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

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    #1

    No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

    I had a Dead Samsung UN65MU6300FXZA with Mainboard BN94-12440E
    Dead / No Power / No Standby Light results after power company had three
    consecutive power outages on/off/on/off/on/off after which TV was rendered unresponsive.

    After exploring the issue found Mainboard was the fault. Then with research on this site determined IC1604 was the suspect. The IC1604 is a surface mounted device (SMD) EEPROM, Winbond Model 25Q40CLSIP. A read on this EEPROM came back with all FF FF FF FF FF in all registers blank and empty of data. I had a spare mainboard with intact IC1604 and utilized the dump from it to rewrite the blanked EEPROM.

    After replacing the restored IC1604 and mounting the Mainboard back into the chassis, the TV standby light illuminated. Then with a touch of the power button the Samsung 65" came back to life.Very Rewarding Experience I had to share with this Team. Hope this helps someone else with a similar issue and please see attached images for component location.
    Good Luck and keep repairing and learning.
    Attached Files
    Last edited by Michael Long; 09-13-2022, 08:20 AM.
    Tags: None
    #2
    Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

    Can you post the dump?

    Comment

      #3
      Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

      That chip is called flash memory, not EEPROM, however it's still programmable.
      Anyways, thanks for sharing and congrats with your success story.

      Comment

        #4
        Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

        I have a doubt about the name as the acronym eeprom i guess is still good also for flash memories.. eeprom is a generic term and doesn't express a technology of the memory cells, isn't it? At the end them are both rom also..
        Last edited by Davi.p; 09-15-2022, 11:57 PM.

        Comment

          #5
          Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

          Find the datasheets for 24x and 25x chips and compare the names.
          Generic term for both is "non-volatile memory"
          But real techs can ignore all of this and use the names they like.

          Comment

            #6
            Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

            Originally posted by alfatv View Post
            That chip is called flash memory, not EEPROM, however it's still programmable.
            Anyways, thanks for sharing and congrats with your success story.
            The 25Q40CLSIP is Serial Flash memory, a type of EEPROM.

            Comment

              #7
              Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

              i usually refer to 24c eeproms as "24c eprom" or "i2c eprom" but probably i'm wrong.. it's easier to call them eeprom for one and spi flash the other one in fact..

              Comment

                #8
                Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

                I really hoped that this thread would help others Fix their Troubled Flat Panel Televisions.
                I have to admit I am learning more than I expected from this post. Being my background
                is a Mechanical Engineer in the Automotive Industry...

                Now I know that I am just fishing for an Atta-Boy, because I don't get enough at home

                Any Comments on the pretty picture I included on component location, or that the First Post
                on this Thread was the Solution to the issue, and Not just a PLEE for help...

                I also added the BIN file as requested, and want to note that this fixes the NO STANDBY light
                issue, that is not clearly resolved with any of online repair kits or Flash Memory sold on eBay.

                I should also say that there were TWO Winbond chips on this Mainboard to my surprise...
                I first re-flashed the 25Q80DVSIG with no JOY ( because I saw it for sale on eBay )
                I want to give thanks to everyone here...
                I LUV this site...
                Last edited by Michael Long; 09-17-2022, 04:37 PM. Reason: improved content

                Comment

                  #9
                  Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

                  Great stuff Michael, thank you, the upload is appreciated, I'm sure it will help others in the future.

                  Comment

                    #10
                    Originally posted by Michael Long View Post
                    Re: No Standby Light on Samsung UN65MU6300FXZA with Mainboard BN94-12440E

                    I really hoped that this thread would help others Fix their Troubled Flat Panel Televisions.
                    I have to admit I am learning more than I expected from this post. Being my background
                    is a Mechanical Engineer in the Automotive Industry...

                    Now I know that I am just fishing for an Atta-Boy, because I don't get enough at home

                    Any Comments on the pretty picture I included on component location, or that the First Post
                    on this Thread was the Solution to the issue, and Not just a PLEE for help...

                    I also added the BIN file as requested, and want to note that this fixes the NO STANDBY light
                    issue, that is not clearly resolved with any of online repair kits or Flash Memory sold on eBay.

                    I should also say that there were TWO Winbond chips on this Mainboard to my surprise...
                    I first re-flashed the 25Q80DVSIG with no JOY ( because I saw it for sale on eBay )
                    I want to give thanks to everyone here...
                    I LUV this site...
                    Hi Michael, same model and same situation, i need that bin file trying to re write eeprom the first time. Could you please share that if you still have that.

                    Comment

                      #11
                      Originally posted by ahmedmild View Post

                      Hi Michael, same model and same situation, i need that bin file trying to re write eeprom the first time. Could you please share that if you still have that.
                      The file is at post 1 and reposted here
                      Attached Files
                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                      Comment

                        #12
                        Tried to play like Michael for first time with no luck ☹️
                        ic looks fine, flashed successfully, verified, no stand by light, no response, no life.

                        No idea what to do next, buy new board?

                        Un65mu6300f bn94-12440E
                        3 Photos

                        Comment

                          #13
                          Originally posted by ahmedmild View Post
                          Tried to play like Michael for first time with no luck ☹️
                          ic looks fine, flashed successfully, verified, no stand by light, no response, no life.

                          No idea what to do next, buy new board?

                          Un65mu6300f bn94-12440E
                          Have you saved your original dump?

                          Comment

                            #14
                            Originally posted by lotas View Post

                            Have you saved your original dump?
                            Yes

                            Comment

                              #15
                              Originally posted by ahmedmild View Post

                              Yes
                              Post it here and I'll see if I can fix anything.

                              Comment

                                #16
                                Originally posted by lotas View Post

                                Post it here and I'll see if I can fix anything.
                                Sure . Thanks , it looked same as Michael's I flashed it anyways.
                                Attached Files

                                Comment

                                  #17
                                  If this is a native, original dump of your TV, then there are no problems with it, it's working, so it's not the problem.

                                  Comment

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