Lg flatron w2252tq-pf

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • s_henya
    Badcaps Veteran
    • Jan 2011
    • 480
    • Israel

    #41
    Re: Lg flatron w2252tq-pf

    the missing voltage on the pin2 of Q1 is ground, sorry didnt check that sooner,

    voltage testing on lvds connector on the tcon board:

    PIN VOLTAGE
    1 GROUND
    2 1.1
    3 1.1
    4 1.1
    5 1.1
    6 1.1
    7 1.1
    8 GROUND
    9 1.1
    10 1.1
    11 1.1
    12 1.1
    13 1.1
    14 1.1
    15 GROUND
    16 1.1
    17 1.1
    18 GROUND
    19 1.1
    20 1.1
    21 1.1
    22 1.1
    23 1.1
    24 1.1
    25 GROUND
    26 3.3
    27 3.3
    28 1.6
    29 4.9
    30 4.9
    31 4.9
    32 GROUND

    taken from the tcon specs:

    Pin No Symbol Description

    1 RXO0- Minus signal of 1st channel 0 (LVDS)
    2 RXO0+ Plus signal of 1st channel 0 (LVDS)
    3 RXO1- Minus signal of 1st channel 1 (LVDS)
    4 RXO1+ Plus signal of 1st channel 1 (LVDS)
    5 RXO2- Minus signal of 1st channel 2 (LVDS)
    6 RXO2+ Plus signal of 1st channel 2 (LVDS)
    7 GND Ground
    8 RXOCRXOC+ Minus signal of 1st clock channel (LVDS)
    9 RXO3- Plus signal of 1st clock channel (LVDS)
    10 RXO3+ Minus signal of 1st channel 3 (LVDS)
    11 RXE0- Plus signal of 1st channel 3 (LVDS)
    12 RXE0+ Minus signal of 2nd channel 0 (LVDS)
    13 GND Plus signal of 2nd channel 0 (LVDS)
    14 RXE1- Ground
    15 RXE1+ Minus signal of 2nd channel 1 (LVDS)
    16 GND Plus signal of 2nd channel 1 (LVDS)
    17 RXE2- Ground
    18 RXE2+ Minus signal of 2nd channel 2 (LVDS)
    19 RXECRXEC+ Plus signal of 2nd channel 2 (LVDS)
    20 RXE3- Minus signal of 2nd clock channel (LVDS)
    21 RXE3+ Plus signal of 2nd clock channel (LVDS)
    22 GND Minus signal of 2nd channel 3 (LVDS)
    23 NC Plus signal of 2nd channel 3 (LVDS)
    24 NC Ground
    25 PWM_OUT No Connection (For LCD internal use only.)
    26 VLCD No Connection (For LCD internal use only.)
    27 VLCD Reference signal for burst frequency inverter control
    28 VLCD Power Supply (5.0V)
    29 RXO0- Power Supply (5.0V)
    30 RXO0+ Power Supply (5.0V)

    if no other ideas will come up i'll give up on this monitor
    repair too much time and effort,

    BUT i'm not regreting i've learned a lot!!

    Comment

    • s_henya
      Badcaps Veteran
      • Jan 2011
      • 480
      • Israel

      #42
      Re: Lg flatron w2252tq-pf

      i got a replacment panel yesterday, found a screen with broken logic board

      and now the image is perfect.

      good thing i havent tossed it away.

      Comment

      • fuxxy
        Badcaps Veteran
        • Jan 2013
        • 318
        • USA

        #43
        Re: Lg flatron w2252tq-pf

        So, in short:

        "Blurriness" and distortion were caused by bad TCON, on this model LCD panel the TCON is not replacable?

        The same panel is used in my defective device, an LG TV, 22LG30

        Comment

        • s_henya
          Badcaps Veteran
          • Jan 2011
          • 480
          • Israel

          #44
          Re: Lg flatron w2252tq-pf

          you have the same problems as i had?

          i tried my best but found no solution but replacing the panel,

          to your question, the tcon board is connected to the panel with ribbon cables that are

          glued/soldiered on the board that cannot be opened.

          Comment

          • fuxxy
            Badcaps Veteran
            • Jan 2013
            • 318
            • USA

            #45
            Re: Lg flatron w2252tq-pf

            Correct, my display is exhibiting the same symptoms as your monitor, However it's an identical LCD panel in a TV package instead of computer display.

            Comment

            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...
              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
            • ohren
              Upgrading a Samsung ue55nu7096u with logic board from an ue55ru7105k -- good idea?
              by ohren
              I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.

              I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.

              The models launched in 2018 and 2019 respectively....
              09-08-2023, 05:24 PM
            • Loading...
            • No more items.
            Working...