LG47LB5900 ( Help Please )

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • yotaman
    Member
    • May 2015
    • 12
    • USA

    #1

    LG47LB5900 ( Help Please )

    I have a 47" LG that I noticed a few weeks ago the bottom left of the screen was starting to slightly dim and brighten. Now when you turn it on it flashes like a strobe light. It does it no matter the input of TV, HDMI, etc. Is this worth fixing ? I am a amateur but would like to do it myself if possible. Any advice appreciated.

    Thanks,
    Yotaman
  • ReeceyBurger123
    Never Give Up !
    • May 2014
    • 7325
    • Britain

    #2
    Re: LG47LB5900 ( Help Please )

    Advise do some research on google plus the forum. Read what you should add to a thread. Run the test patterns. Test voltages. Help us help you.
    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

    https://www.facebook.com/Telford-Tel...7894576335359/

    Comment

    • yotaman
      Member
      • May 2015
      • 12
      • USA

      #3
      Re: LG47LB5900 ( Help Please )

      I did google but no clear answers. I am looking for general knowledge from what I am describing before I open the TV up.
      Thanks for your time and response
      Last edited by yotaman; 10-13-2016, 05:22 AM.

      Comment

      • ReeceyBurger123
        Never Give Up !
        • May 2014
        • 7325
        • Britain

        #4
        Re: LG47LB5900 ( Help Please )

        Ok sounds to me like an Led in the screen is beginning to fail not easy to get to as you have to tear the whole screen apart. Check for my Led repair videos.
        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

        https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • yotaman
          Member
          • May 2015
          • 12
          • USA

          #5
          Re: LG47LB5900 ( Help Please )

          Thanks for the response !

          Comment

          Related Topics

          Collapse

          • g0v
            industrial 24Vdc Xenon strobe light troubleshooting
            by g0v
            Hello all,

            Im seeking help to understand this circuit more so that i can Fix it faster.

            Its from Medc , model: Xb11




            It contains:

            1 P channel IRF9530N Mosfet(installed with the black heat sink).
            1 N channel IRG4BC30K Obsolete IGBT. Near to the mosfet
            2 TLC555/Q timer IC(the old one contains ts555in its the same function i guess).
            2 ZTX649 NPN medium power transistors. On the right
            1 ZTX749 PNP medium power transistor. On the right
            1 C106M1G SCR (reverse blocking Thyristor)...
            08-03-2023, 12:33 PM
          • prospa
            TV SAMSUNG UE55F6500SS problem led flashing like strobe
            by prospa
            User avatarJoined: 26 Feb 2015 21:28 Cash on hand: 79.02



            Messages: 27
            Location: GREECE
            Hello i have tv SAMSUNG UE55F6500SS
            The roblem is that when i start it all led start flashing like strobe and never stop. I hear the sound regular from the speakers.
            I bought new led stripe but the problem is still the same
            When i disconnect motherboard from power supply all the led light up without problem.
            I tried also to rework bga chip SAMSUNG SEMS30 but nothing.
            my motherboard is
            BN94-07104N
            HIGH_X12_UNION...
            02-18-2021, 01:43 PM
          • cueballsi
            e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord
            by cueballsi
            Well need some help guys... I removed the drivers and put it all together have some lines.. I think I need to clean the cables and put them back. BUT I noticed the following:

            - I used a OO power cable instead of the [ ]O looking power cable to power up the tv.
            - The LEDs seem to brighten and darken and brighten like a very slow strobe.

            Did I mess up the board with the power cable mess up? I switched to the [ ]O type and still slowly pulses....

            what would make the LEDs do this?

            any help would be appreciated. What should I test?...
            10-02-2020, 05:44 PM
          • Green Probe
            Recapping a Denon AVR X6400h SMPS
            by Green Probe
            (TLDR: It was capacitor C6519 [Koshin KZH 50V22uF] and C6515 [Koshin KZH 25V47uF] on the power supply. I have questions at the end)
            Disclaimer: I'm an amateur hobbyist and will get things wrong.
            Always use caution when working around mains power and high voltage capacitors!

            Hey guys, I'm repairing a Denon AVR X6400h for my brother. It quit powering on after a power outage. It acted like this last time there was an outage, but after letting it sit overnight it started working again for a few years. This time letting it sit did not bring it back.
            SYMPTOMS:
            -No display...
            07-18-2025, 03:36 PM
          • BOSCHNJAK
            by BOSCHNJAK
            ABOUT ME INTRODUCTION FILE

            2
            024 BEV, BIH, SARAJEVO START PROJECT: ELECTRIC VEHICLE TOYOTA 4 RUNNER CONVERSION http://www.bev.ba/TOYOTA4RUNNER/index.html

            2023 BEV, BIH, SARAJEVO START PROJECT: SECRETS AND MANUFACTURING PLANS (AS MY REPLICA) OF THE LIBERTY ENGINE 2.0.
            2022 BEV, PROJECT ?
            2021 BEV, PROJECT ?
            2020 BEV,BiH, Sarajevo: PROJECT IS: HOW TO SWITCH OFF PERMANENT MAGNET FIELD and HOW TO SWITCH ON PERMANENT MAGNET FIELD?
            2019 BEV, Croatia, Ston:, Broce: PROJECT - PROJEKT ELEKTRIČNI GLISER http://www.bev.ba/ELEKTRICNIVANBRODSKIMOTOR/indexHR.htm...
            12-28-2023, 02:09 PM
          • Loading...
          • No more items.
          Working...