samsung ue55nu7021k backlights working but blank screen

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • vinceroger69
    Badcaps Legend
    • Mar 2012
    • 6714
    • uk

    #81
    Re: samsung ue55nu7021k backlights working but blank screen

    i wonder if this one would work as cheaper https://www.ebay.co.uk/itm/203577018...B&gclsrc=aw.ds

    Comment

    • Yoda79
      Senior Member
      • Dec 2021
      • 56
      • United Kingdom

      #82
      Re: samsung ue55nu7021k backlights working but blank screen

      Originally posted by lotas
      BOARD BN41-02662A is the PCB number.
      Great thanks for explaining that Lotas!

      Comment

      • lotas
        Badcaps Legend
        • Jan 2016
        • 4562
        • Russia

        #83
        Re: samsung ue55nu7021k backlights working but blank screen

        The number is not visible, and the matrix models are different.
        Attached Files

        Comment

        • Yoda79
          Senior Member
          • Dec 2021
          • 56
          • United Kingdom

          #84
          Re: samsung ue55nu7021k backlights working but blank screen

          Originally posted by vinceroger69
          i wonder if this one would work as cheaper https://www.ebay.co.uk/itm/203577018...B&gclsrc=aw.ds
          This site is awesome! Irrespective of whether this works or not you have both been of great help.

          Vince - on this one they don't quote the BN94-12869M number and you can't see from the picture on the advert. However as you say the BN41-02662A matches which is printed on the board as well as BN95-05414Q on the sticker on metal surround.

          Lotas did say that the important one to match is the part number BN94-12869M corresponds?

          Comment

          • vinceroger69
            Badcaps Legend
            • Mar 2012
            • 6714
            • uk

            #85
            Re: samsung ue55nu7021k backlights working but blank screen

            Originally posted by lotas
            The number is not visible, and the matrix models are different.
            sorry missed that bit the other board looks the best option then

            Comment

            • lotas
              Badcaps Legend
              • Jan 2016
              • 4562
              • Russia

              #86
              Re: samsung ue55nu7021k backlights working but blank screen

              Originally posted by vinceroger69
              i wonder if this one would work as cheaper https://www.ebay.co.uk/itm/203577018...B&gclsrc=aw.ds
              This mainboard can also be installed, but you have to change the parameters in the servicing mode.
              But it's better not to risk it.
              Last edited by lotas; 12-20-2021, 09:12 AM.

              Comment

              • vinceroger69
                Badcaps Legend
                • Mar 2012
                • 6714
                • uk

                #87
                Re: samsung ue55nu7021k backlights working but blank screen

                Originally posted by Yoda79
                Great thanks for explaining that Lotas!
                Like yoda says thanks for explaining that lotas a lot of people like myself struggle knowing what numbers actually matter when trying to purchase replacement mainboards. maybe if you get time could you possibly please make a sticky thread on what numbers matter etc as a lot of members dont have programmers so prefer a board swap.

                Comment

                • Yoda79
                  Senior Member
                  • Dec 2021
                  • 56
                  • United Kingdom

                  #88
                  Re: samsung ue55nu7021k backlights working but blank screen

                  Originally posted by lotas
                  This mainboard can also be installed, but you have to change the parameters in the servicing mode.
                  But it's better not to risk it.
                  I managed to get the seller on ebay to send me the number on the sticker, this is slightly different, it shows a number of BN94-12869G. My existing one is BN94-12869M. Photo attached of the number from the ebay seller.

                  I'm guessing this would need to change the parameters in the servicing mode as you say? Or now knowing this, do you think this one would work?
                  Attached Files

                  Comment

                  • vinceroger69
                    Badcaps Legend
                    • Mar 2012
                    • 6714
                    • uk

                    #89
                    Re: samsung ue55nu7021k backlights working but blank screen

                    this just gone on ebay
                    https://www.ebay.co.uk/itm/294652623...gAAOSwfYVhwOBJ
                    looks like rite one?

                    also this even cheaper does not mention lcd panel number though
                    https://www.ebay.co.uk/itm/334257416...4AAOSwLalhu5eY
                    Last edited by vinceroger69; 12-21-2021, 02:58 AM.

                    Comment

                    • angelos
                      Badcaps Veteran
                      • Dec 2012
                      • 568
                      • South Africa

                      #90
                      Re: samsung ue55nu7021k backlights working but blank screen

                      I just read the whole thread and was wondering something? Why don't you just get the correct board from a Samsung authorised dealer who will 100% supply you with the correct board? Is it more expensive?

                      Comment

                      • lotas
                        Badcaps Legend
                        • Jan 2016
                        • 4562
                        • Russia

                        #91
                        Re: samsung ue55nu7021k backlights working but blank screen

                        Originally posted by angelos
                        I just read the whole thread and was wondering something? Why don't you just get the correct board from a Samsung authorised dealer who will 100% supply you with the correct board? Is it more expensive?
                        Yes, almost for nothing.
                        https://www.samparts.eu/en/samsung-bn94-12869m

                        Comment

                        • vinceroger69
                          Badcaps Legend
                          • Mar 2012
                          • 6714
                          • uk

                          #92
                          Re: samsung ue55nu7021k backlights working but blank screen

                          Originally posted by lotas
                          About £132.00 in the uk

                          Comment

                          • angelos
                            Badcaps Veteran
                            • Dec 2012
                            • 568
                            • South Africa

                            #93
                            Re: samsung ue55nu7021k backlights working but blank screen

                            129.50 euros, ah yes almost half the price of a new tv. Sounds familiar. Yes these Samsung spares are pricey.

                            Comment

                            • angelos
                              Badcaps Veteran
                              • Dec 2012
                              • 568
                              • South Africa

                              #94
                              Re: samsung ue55nu7021k backlights working but blank screen

                              Its the Smart TV motherboards. They are all very expensive.

                              Comment

                              • lotas
                                Badcaps Legend
                                • Jan 2016
                                • 4562
                                • Russia

                                #95
                                Re: samsung ue55nu7021k backlights working but blank screen

                                Originally posted by vinceroger69
                                this just gone on ebay
                                https://www.ebay.co.uk/itm/294652623...gAAOSwfYVhwOBJ
                                looks like rite one?

                                also this even cheaper does not mention lcd panel number though
                                https://www.ebay.co.uk/itm/334257416...4AAOSwLalhu5eY
                                Yes, they will come up for replacement, they have a corresponding part number, but it is cheaper for her to have a bent connector.
                                On the first link, he also has a 30-day warranty.
                                Attached Files

                                Comment

                                • vinceroger69
                                  Badcaps Legend
                                  • Mar 2012
                                  • 6714
                                  • uk

                                  #96
                                  Re: samsung ue55nu7021k backlights working but blank screen

                                  Originally posted by lotas
                                  Yes, they will come up for replacement, they have a corresponding part number, but it is cheaper for her to have a bent connector.
                                  On the first link, he also has a 30-day warranty.
                                  Good spot on that connector i was on phone so didnt zoom in (see it now im on laptop) so yes ignore the second ebay link!

                                  Comment

                                  • Yoda79
                                    Senior Member
                                    • Dec 2021
                                    • 56
                                    • United Kingdom

                                    #97
                                    Re: samsung ue55nu7021k backlights working but blank screen

                                    ok, just caught up. I'm going for the first link vince suggested:

                                    https://www.ebay.co.uk/itm/294652623...gAAOSwfYVhwOBJ

                                    Correct?

                                    Thank you all!!!

                                    Comment

                                    • Yoda79
                                      Senior Member
                                      • Dec 2021
                                      • 56
                                      • United Kingdom

                                      #98
                                      Re: samsung ue55nu7021k backlights working but blank screen

                                      Sorry I'm not sure but the link I posted doesn't work but apologies for asking but am I right to order the first link shown by Vince in post 89.

                                      Thanks

                                      Comment

                                      • Yoda79
                                        Senior Member
                                        • Dec 2021
                                        • 56
                                        • United Kingdom

                                        #99
                                        Re: samsung ue55nu7021k backlights working but blank screen

                                        Also, how can I get email notifications when someone posts in the thread?

                                        Comment

                                        • lotas
                                          Badcaps Legend
                                          • Jan 2016
                                          • 4562
                                          • Russia

                                          #100
                                          Re: samsung ue55nu7021k backlights working but blank screen

                                          Originally posted by Yoda79
                                          Sorry I'm not sure but the link I posted doesn't work but apologies for asking but am I right to order the first link shown by Vince in post 89.

                                          Thanks
                                          Yes, right on the first link: https://www.ebay.co.uk/itm/294652623...gAAOSwfYVhwOBJ

                                          Comment

                                          Related Topics

                                          Collapse

                                          • dicky96
                                            HP Elitebook Screen blank - backlights but no image
                                            by dicky96
                                            Hi guys
                                            I'm trying to fix this laptop screen

                                            Basically the owner is a computer shop and they brought it to me with two screens. They said the repair shop they use could not fix it, so I thought i would try to see if I am better than their current repairer!

                                            OK so I have the original screen which works but has lines across the bottom quarter of the screen

                                            I have the replacement screen, which they fitted and it worked. They then put the laptop on one side for a couple of weeks until they found a buyer. When they showed it to the buyer, the screen would...
                                            04-28-2021, 07:30 AM
                                          • mrtek
                                            Samsung UN65js8500F, no sound, blank screen and T-Con board with one LED on
                                            by mrtek
                                            Hi I am new to this kind of repairs but I want to learn..I have a Samsung UN65JS8500F. the TV used to work and I tried to fix darker areas in the middle only ( img 1,2,3). I thought the led strip were bad..not the case. I did not research in advance what kind and where the LED were located. In this model they are located vertically on right and left side. Took the TV apart and put it back together. Now the tv shows no welcome screen and no sound is available thru the speakers. ..just a black screen..Backlight LED do turn on...also noticed a 5 blink code , not sure if that was there before. I can...
                                            11-26-2024, 09:58 AM
                                          • Bloopeta
                                            Samsung UE55JU6800K No Picture
                                            by Bloopeta
                                            Samsung UE55JU6800K with no image on screen.

                                            I have had this TV many years without fault, however aprox 6 months ago I fitted a new set of backlights as some of the lens caps had fallen off.

                                            Was working fine, until 3 days ago, when watching TV the screen just went blank (still illuminated)
                                            I turned the TV off and left it around 12 hours, and when turned it on again it seemed to work perfectly again. After around 45 mins the screen went blank again.
                                            Left it off overnight and turned it on, and the Smart TV logo came on as normal, then screen went blank.
                                            ...
                                            05-03-2024, 10:42 AM
                                          • bohaboha
                                            Samsung UE70TU6905 BACKLIGHTS AND SOUND ON NO PICTURES BUT SCREEN NOT DARK
                                            by bohaboha
                                            Hi it looks like everything works don't know where to test except the 390v in the 2 capacitor in the hot side of the power supply and the weird 180v in the diodes in the cold side that should be discharged it is writin on the circuit no more you can read what is written on the circuit quite srrange color mixiing yellow and white
                                            anyhow i couldn't t read anything else
                                            the backlight is on strong and the screen does not get dark or very dark but no pictures
                                            the mainborad feels a bit hott on the black part i test it to 52 degree's against 34 to 40 on the rest of it
                                            ...
                                            01-02-2025, 08:04 PM
                                          • madverkus
                                            Samsung UE50KU6072U - Backlights working, black screen
                                            by madverkus
                                            Hey guys

                                            I got this TV from my friend and he said that one day he was trying to power it on it was just dead.
                                            I did open the back of the TV and check the boards and cable connections and everything seems ok (no popped caps or anything visible).
                                            I tried to turn it on few times and when I plug it in it flashes "Smart TV" logo and goes dark for about 20 seconds (no backlight yet) and after that the backlights are lit but no picture and didn't give any startup sound, sometimes it didn't start up but did show the standby led only and every time I pushed power...
                                            12-23-2021, 09:49 PM
                                          • Loading...
                                          • No more items.
                                          Working...