Problem with TV LG 50PK550C-UD Plasma

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  • pilloperez
    Member
    • Jan 2016
    • 22
    • Canada
    #1

    Problem with TV LG 50PK550C-UD Plasma

    Hello Everyone. I'm back again with another TV issue. It is an LG 50PK550C-UD Plasma.

    Everything started around two months when the screen started blinking as soon as I turn it ON, but in a couple of minutes it stopped blinking and started to display everything perfectly.

    I didn't put too much attention to this issue because starting the tv with some time before to start to watch it was working for us. But lately, it's taking longer and longer sometimes more than 30 minutes. So I (my wife) decided it's time to fix it.

    I checked the power supply voltages and they are good in both states (blinking and displaying properly)

    Something I realized and is easy to see in the pictures is some dark zones due to heated parts. But not sure if that normal on this devices.

    I'm adding too some videos to google drive so you can see the display blinking on the menu, video and later how it works perfectly (here https://drive.google.com/open?id=1zF...jjk7E-7mSXoy3W)

    I did a research on internet, but didn't found this issue specifically. I'm planning to buy the damaged board. I only need to know which one is damaged.

    Thank for the Help in advance
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    • TechGeek
      Computer Geek
      • Jan 2015
      • 2254
      • USA
      #2
      Re: Problem with TV LG 50PK550C-UD Plasma

      It looks like the board marked E52483 is damaged due to overheating. Also, the board shown in the last photo (not sure of part number) may also be damaged.


      FYI, you might want to consider adding a fan (or 2, 3, 5, or 100) to help keep the TV cool after you repair it.
      Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.

      My computer doubles as a space heater.

      Permanently Retired Systems:
      RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
      Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.


      Kooky and Kool Systems
      - 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
      - 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
      - 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
      - Main Workstation - Fully operational!

      sigpic

        Comment

        • pilloperez
          Member
          • Jan 2016
          • 22
          • Canada
          #3
          Re: Problem with TV LG 50PK550C-UD Plasma

          I think I found the issue. I took a Hairdryer and started to warm up the boards (one by one) until seeing the TV working properly. It looks Like the YSUS Board is the one. I already ordered one on Ebay. Will keep you update.

            Comment

            • pilloperez
              Member
              • Jan 2016
              • 22
              • Canada
              #4
              Re: Problem with TV LG 50PK550C-UD Plasma

              Sorry the late update. It was the YSUS board. Working perfectly since the exchange

                Comment

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