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Samsung un65h6203af led replacement question

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    Samsung un65h6203af led replacement question

    This tv is with sound but no picture. When light shines on the screen, we can see the image. This is a typical backlight problem. I opened it and found quite a lot of the leds are damaged. But the damaged ones are all shorted. No one is open. Is there a special reason? (From my past experience, both can be happened)

    When I supply 3V to each of the good leds, the currents range from 105mA to 154mA. From these figures, I think the leds are 3V and about 0.5W. I plan to replace all the damaged leds only (because the price of the led strips is very expensive), but I could not find 3V 0.5W leds online. Instead, 3V 1W leds can be easily found. Can I use the 1W leds? (I think if the tv supplies a constant current to the leds, then I think using 1W to replace the 0.5W is no problem. But I do not know if the tv supplies a constant current or a constant voltage to the leds.)

    One more question. Since there are quite a lot of damaged leds, I also plan to replace some more leds (which still light up but may fail very soon) so that the tv can last longer after repair. How can I find them? Will the current drawn give a hint on that? Which one will have a longer life left (the one will draw lower current or the one will draw higher current)?
    Last edited by tmhobadcap; 10-03-2023, 11:50 PM.

    #2
    Re: Samsung un65h6203af led replacement question

    I would go with the whole set at around 37 bucks: https://www.ebay.com/sch/i.html?_fro...076A+&_sacat=0
    Quit due to disrespect from unpaid sta,ff.

    Comment


      #3
      Re: Samsung un65h6203af led replacement question

      Originally posted by nomoresonys View Post
      i would go with the whole set at around 37 bucks: https://www.ebay.com/sch/i.html?_fro...076a+&_sacat=0
      +1

      Comment


        #4
        Re: Samsung un65h6203af led replacement question

        Originally posted by nomoresonys View Post
        i would go with the whole set at around 37 bucks: https://www.ebay.com/sch/i.html?_fro...076a+&_sacat=0
        +2

        Comment


          #5
          Re: Samsung un65h6203af led replacement question

          Originally posted by nomoresonys View Post
          I would go with the whole set at around 37 bucks: https://www.ebay.com/sch/i.html?_fro...076A+&_sacat=0
          Thanks for your suggestion. I have placed the order for the led strips.

          But I still would like to know the answers to my above questions. They would be useful for me in case I have another tv which needs only to replace just a few leds.

          Comment


            #6
            Re: Samsung un65h6203af led replacement question

            Well they are 3 volts, that's all I know.
            Quit due to disrespect from unpaid sta,ff.

            Comment


              #7
              Re: Samsung un65h6203af led replacement question

              Originally posted by tmhobadcap View Post
              This tv is with sound but no picture. When light shines on the screen, we can see the image. This is a typical backlight problem. I opened it and found quite a lot of the leds are damaged. But the damaged ones are all shorted. No one is open. Is there a special reason? (From my past experience, both can be happened)

              When I supply 3V to each of the good leds, the currents range from 105mA to 154mA. From these figures, I think the leds are 3V and about 0.5W. I plan to replace all the damaged leds only (because the price of the led strips is very expensive), but I could not find 3V 0.5W leds online. Instead, 3V 1W leds can be easily found. Can I use the 1W leds? (I think if the tv supplies a constant current to the leds, then I think using 1W to replace the 0.5W is no problem. But I do not know if the tv supplies a constant current or a constant voltage to the leds.)

              One more question. Since there are quite a lot of damaged leds, I also plan to replace some more leds (which still light up but may fail very soon) so that the tv can last longer after repair. How can I find them? Will the current drawn give a hint on that? Which one will have a longer life left (the one will draw lower current or the one will draw higher current)?
              Hey man if I can suggest something to you is just don't waste your time because you need only change all of led to do a best job. So don't give it to time of your life to do experiments, the bast way is change every strip. 👍👋

              Comment


                #8
                Re: Samsung un65h6203af led replacement question

                The single leds that you spend time replacing, will only buy time. The ones you dont replace have aged and will go out soon after. I suspect that tv is a 2015 or 16 model. Glad you bought new ones.

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