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Samsung UN60J6200 No power up

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    #21
    Re: Samsung UN60J6200 No power up

    It looks like BLU_PWM is .9V, is this correct?

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      #22
      Re: Samsung UN60J6200 No power up

      So, I would say you have bad backlights.
      I assume no responsibility for any stupid suggestions I might post.

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        #23
        Re: Samsung UN60J6200 No power up

        you maybe right. cant get it into forced backlight mode. Today I suddenly got reading of 100v on center pin of that mosfet and diodes under it. Power cycle, then i get 500mV. On one power cycle it didnt automatically turn on like it has been, i had to use the power button to turn on. this unit is acting erratically.

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          #24
          Re: Samsung UN60J6200 No power up

          Fired it up on a 100w dim bulb tester, bulb flashes bright then dims every 3 seconds.

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            #25
            Re: Samsung UN60J6200 No power up

            ok, you see video, and have 388 on filter caps, must be the backlights.
            Last edited by nomoresonys; 10-05-2022, 12:44 PM.

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              #26
              Re: Samsung UN60J6200 No power up

              Originally posted by nomoresonys View Post
              ok, you see video, and have 388 on filter caps, must be the backlights.
              Can you post the part number for replacement. Thank you.

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                #27
                Re: Samsung UN60J6200 No power up

                .
                Last edited by nomoresonys; 10-06-2022, 10:51 AM.

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                  #28
                  Re: Samsung UN60J6200 No power up

                  some info. from shopjimmy, they're kinda high priced there tho: https://www.shopjimmy.com/bn96-29074...strips-new-12/

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                    #29
                    Re: Samsung UN60J6200 No power up

                    some there, don't recall buying from them so can't actually vouch for them but they have 99% rating and decent price: https://www.ebay.com/itm/20384872651...Cclp%3A2047675

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                      #30
                      Re: Samsung UN60J6200 No power up

                      Originally posted by nomoresonys View Post
                      some there, don't recall buying from them so can't actually vouch for them but they have 99% rating and decent price:
                      TY, that seller sold 130 units, must be decent quality. Ill give it a try and report back.

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                        #31
                        Re: Samsung UN60J6200 No power up

                        Installed new backlight LEDs. With panel disconnected from microcontroller, on dim bulb, the backlight lights up, but only momentarily as it flashes on and off every few seconds. The bulb remains is dim in this case.

                        With panel attached to microcontroller the dim bulb flashes bright after the flash of the backlight. I do see blue LEDs light up on the TCON board now but only momentary before backlight flashes off.

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                          #32
                          Re: Samsung UN60J6200 No power up

                          ok, so if dim bulb tester doesn't stay bright thats good, I would try it without the dbt.

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                            #33
                            Re: Samsung UN60J6200 No power up

                            Ok the backlight is working. But I maybe messed something up. I did accidentally make small crack in a corner Chalk it up as a learning experience.
                            Attached Files

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                              #34
                              Re: Samsung UN60J6200 No power up

                              Damn, sorry to hear that, they are easy to break.

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