MSTAR MST8757T Flash images

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • kevin_allein
    Member
    • Dec 2023
    • 45
    • Germany
    #1

    MSTAR MST8757T Flash images

    Hi all,
    I had saved a 42 inch LG Display LC420WUD (SB)(M4), which is a 1920x1080 @ 120 Hz LCD from a Loewe TV.

    Click image for larger version Name: panel_label.jpg Views: 0 Size: 450.5 KB ID: 3575151

    I bought a chinese driver board and manufactured cables to hook it up.
    Click image for larger version Name: S1e972448d89c45a69f19f69b3162bc069.jpg Views: 0 Size: 159.0 KB ID: 3575150

    I do see the image, however it is not optimal. That board has a heat sink on the scaler, so I cannot see the marking. From web research I believe it is an MSTAR MST8757T. Unfortunately the company does not seem to exist anymore, so I can neither find datasheets nor Flash images for my display.
    I have tried to hookup a 809F programmer and can read the firmware on the board.

    Does anyone have any tips where to find datasheet and more important firmware files ?
    Attached Files
    Tags: None
    • kevin_allein
      Member
      • Dec 2023
      • 45
      • Germany
      #2
      found on a russian website an image for the following Monitor:

      AOC G2460Pqu
      main 715G5121-M01-000-005F
      cpu MST8757T
      panel M240HW01 V.8
      MX25L1605_U402
      24_02_U101
      24_02_U104
      24_02_U112​

      The panel is a 1920 x 1080 @ 120 Hz LCD panel, but when I flash that image, I see the AOC logo flickering on the screen, but never get an image of my HDMI source.
      I am surprised to see, that the serial flash is smaller than the one on my board.

      Any tips ?

        Comment

        • kevin_allein
          Member
          • Dec 2023
          • 45
          • Germany
          #3
          Finally I found another binary on a Russian website and the first impression of the image is pretty good. However when using a test image of colored squares on black background I can now clearly see vertical lines. It is pretty difficult to find out at what distance, I am guessing something like every 16th colomn or so. A picture looks pretty good, so I should be in the right LVDS (VESA / JEIDA) mode.
          I did have to make the LVDS cable between the chinese driver board and the LCD panel myself, so I could have some error in that cable.
          Any ideas, what is the problem here ?
          Attached Files

            Comment

            • kevin_allein
              Member
              • Dec 2023
              • 45
              • Germany
              #4
              Some additional information: I had used LVDS cables from ALIexpress with the LG connectors on the panel side. As this panel has 2 connectors I needed two cables, one with 51 pins, the other with 41 pins. Unfortunately for one of them I could not find cables with 5 data pairs, so I have 4 data pairs for two LVDS channels on one connector and 5 data pairs for also two LVDS channels on the other connector. This leads to first LVDS Receiver Signal E +/- and second LVDS Receiver Signal E +/- are not connected, while for third and fourth LVDS Receiver Signal E +/- are connected.
              Could this be my problem ?

                Comment

                • kevin_allein
                  Member
                  • Dec 2023
                  • 45
                  • Germany
                  #5
                  I changed the LCD panel configuration to 8 bit and now it works perfectly!

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • 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
                    • 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
                    • canadaboy25
                      Panasonic TC-P54VT25 No image. A or D board?
                      by canadaboy25
                      I have a Panasonic TC-P54VT25 that will power on and prime the display but there is no image at all.

                      The panel is primed as there is a slight glow from the entire panel. This means the problem should be logic related. The service manual also confirms this and recommends replacing the A or the D board.

                      I have tried to get the TV to display the test sequence but I have been unable to and I don't even know if this TV has a test sequence or not. I tried following tom66's instructions in post #3 on this thread https://www.badcaps.net/forum/showthread.php?t=26790. There was...
                      01-17-2021, 01:06 AM
                    • tuner2000i
                      Philips 65PUS8518/12 distorted image after main board replacement
                      by tuner2000i
                      hello everyone,

                      I don't normally do tv repairs but this is a case with my personal TV which got fried together with many other electronics in my house after a thunderstorm.

                      The TV is a Philips 65PUS8518/12 which had no power. I measured and concluded that the main board was probably fried through ethernet or hdmi. I found a board with same number 715GD328-M0F-B00-005Y (I had G) but from a 55PUS8518. The TV starts but the image is doubled, distorted. I need to set the panel code which is 016 according to the sticker on the back but I can not seem to do it.

                      ...
                      07-15-2025, 01:15 PM
                    • huzo
                      Dell 5590 no image on LCD,HDMI works ,the board works...
                      by huzo
                      The board is LA-F411P ,DELL 5590 ...

                      The screen polarises,no backlight,no image,only black screen,tried another screen,the same,so there is no backlight,but there should be an image when i shine a lamp behind the screen,but there is none...only dark screen...when screen is connected and i press F8 to turn the image over to the external monitor, the external monitor gets coloured bars ,but when i disconnect the cable from the EDP ,the HDMI picture is good...What could be the problem? I don't have another edp cable, but i measured it with meter and it comes out good...i am baffled......
                      02-16-2025, 03:08 PM
                    • Loading...
                    • No more items.
                    Working...