LG 42LH3000 - AV Board or TCon Board?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • hughfraser
    New Member
    • Aug 2014
    • 4
    • United Kingdom
    #1

    LG 42LH3000 - AV Board or TCon Board?

    Hi guys,
    My TV is on it's last legs or so other people would have us believe, here's the symptoms of the TV,

    1. Picture is like watch an infrared video, I.E. colours are all wrong and up the left.

    I just hope I can upload a photo of it as you need to see it to believe it.

    Hope the picture helps, as I have no idea what is wrong with it, I just need to know as I will take it in a shop for repair so I would like to know (kinda) what am talking about before I take it in.

    Hugh
    Attached Files
    Tags: None
    • Agent24
      I see dead caps
      • Oct 2007
      • 4951
      • New Zealand
      #2
      Re: LG 42LH3000 - AV Board or TCon Board?

      I believe that kind of picture fault is called "solarization"
      "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
      -David VanHorn

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: LG 42LH3000 - AV Board or TCon Board?

          You need to check the GAMMA Voltages on the T-CON board to see if they are OK or not. Did any body work on this TV before?
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • chrismurphy
              Badcaps Veteran
              • May 2014
              • 251
              • australia
              #4
              Re: LG 42LH3000 - AV Board or TCon Board?

              replace T-con board should fix the issue

                Comment

                • hughfraser
                  New Member
                  • Aug 2014
                  • 4
                  • United Kingdom
                  #5
                  Re: LG 42LH3000 - AV Board or TCon Board?

                  Thanks for the reply's guys, No work has been done on the TV before, first bit of trouble we have had from it since new.
                  Last edited by hughfraser; 08-30-2014, 12:15 AM. Reason: bad grammar

                    Comment

                    • Audioplus
                      Senior Member
                      • Feb 2012
                      • 157
                      • USA
                      #6
                      Re: LG 42LH3000 - AV Board or TCon Board?

                      Bud always gives good advice, I'm a novice and have been successfully repairing a couple dozen LCD's and plasma's with he and Tom's (Tom66?)good advice. Mainly Samsung's, but a Sharp, few Vizio's, LG's , Toshiba, etc.
                      I do believe this is a T-Con issue.

                        Comment

                        Previous template Next

                        Related Topics

                        Collapse
                        • Hakuu
                          LG OLED77G1PUA - No Video / Audio after a TCON Board change and Software Update
                          by Hakuu
                          Hi There,

                          This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.

                          After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.

                          More Details

                          TV Model - LG OLED77G1PUA

                          Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
                          07-12-2023, 02:37 PM
                        • Tynan Dill
                          Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                          by Tynan Dill
                          I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                          Upon bringing it home and plugging it up, it showed a standby light.

                          I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                          The screen seems to blackout and stay black, but with a flashlight I can see the display.

                          With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                          Assuming...
                          ORIGINAL POWER SUPPLY BOARD
                          7 Photos
                          11-22-2024, 01:46 PM
                        • advant
                          Driving a Sharp TCON/panel with a universal main board
                          by advant
                          This thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.

                          I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match...
                          02-03-2020, 12:25 AM
                        • m1ch43lzm
                          HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
                          by m1ch43lzm
                          Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
                          Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
                          05-12-2025, 08:37 PM
                        • howardc64
                          A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
                          by howardc64
                          Problem

                          This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
                          08-04-2024, 10:36 PM
                        • Loading...
                        • No more items.
                        Working...