TX-L50B6B Failing to start up backlight flicker

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    New Member
    • Jan 2019
    • 3
    • England
    #1

    TX-L50B6B Failing to start up backlight flicker

    Hi.

    I have a Panasonic TX-L50B6B (Vestel, I beleive)

    TV tries to start up, during this time the backlight will flicker every second or so
    After a couple of flickers TV turns off and red light flashes every 4-5 seconds.

    I have removed the back and gave a visual inspection and everything looks fine to me. This TV has a what I believe to be a Backlight Inverter Board, I unplugged this and applied power to set and the set still turns off after the same amount of time (without backlights obviously)
    Having read a few threads it seams it may be a backlight problem which is why I unplugged the inverter as I thought no inverter would rule that out (happy to be proved wrong)

    I have no real electrical background Knowledge but I am not a complete idiot and do realise what power is where and to be careful. I may further add that I try to repair all of my own household electrical items as I am a tight Git.

    Thanks in Advance for any posts relating to this and I have came here as you guys helped me about 10yr ago, during the Samsung bad capacitor period.

    Thanks Guys.
    Tags: None
    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12206
      • U.S.
      #2
      Re: TX-L50B6B Failing to start up backlight flicker

      One blink of the power LED indicates a problem in the inverter circuit.
      Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12206
          • U.S.
          #3
          Re: TX-L50B6B Failing to start up backlight flicker

          One there for 25+10, may be some cheaper, just stopped at first one I saw, don't know if it will fix but that's what 1 blink code comes up with. As always triple check to try to insure a match whenever buying a part, maybe check the resistors on the board with a multimeter, it may be a 50 cent fix rather than 35 pounds. https://www.ebay.co.uk/itm/INVERTER-...aSl:rk:26:pf:0
          Last edited by nomoresonys; 01-26-2019, 08:04 AM.
          Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12206
              • U.S.
              #4
              Re: TX-L50B6B Failing to start up backlight flicker

              may want to check Scotty16's thread there, just a few rows down. https://www.badcaps.net/forum/showthread.php?t=51587
              Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

                Comment

                • Loading.......
                  New Member
                  • Jan 2019
                  • 3
                  • England
                  #5
                  Re: TX-L50B6B Failing to start up backlight flicker

                  Hi NomoreSonys.

                  Thanks for the replies and suggestions.
                  After having a good look around the site and the net, it seems these are terrible for backlights going. I have read a few where the inverter board was replaced and problem stayed the same. I think I will strip out the boards and tip it as I never know what I will find in my job and I quite often come across TV’s.
                  My other TV is a 55 inch Logik (vestel) I repaired that by replacing a few diodes after reading a thread or two on here, it owes my about £1 which is just over $1 in today’s rates ��

                  Thanks again Friend and I will nip in every now and then to pick everybody’s brains.

                  Keep safe Pal and best wishes from the UK ����

                    Comment

                    • nomoresonys
                      Badcaps Legend
                      • Jan 2013
                      • 12206
                      • U.S.
                      #6
                      Re: TX-L50B6B Failing to start up backlight flicker

                      These might respond well to the current mod. here where they switch out a couple resistors. https://www.youtube.com/watch?v=ogtfojsIZK8
                      Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

                        Comment

                        • nomoresonys
                          Badcaps Legend
                          • Jan 2013
                          • 12206
                          • U.S.
                          #7
                          Re: TX-L50B6B Failing to start up backlight flicker

                          Originally posted by Loading.......
                          Hi NomoreSonys.

                          Thanks for the replies and suggestions.
                          After having a good look around the site and the net, it seems these are terrible for backlights going. I have read a few where the inverter board was replaced and problem stayed the same. I think I will strip out the boards and tip it as I never know what I will find in my job and I quite often come across TV's.
                          My other TV is a 55 inch Logik (vestel) I repaired that by replacing a few diodes after reading a thread or two on here, it owes my about £1 which is just over $1 in today's rates ��

                          Thanks again Friend and I will nip in every now and then to pick everybody's brains.

                          Keep safe Pal and best wishes from the UK ����
                          55 inch tv for a dollar, very nice find.
                          Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

                            Comment

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