MSTAR MST8757T Flash images

[kevin_allein]

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



I bought a chinese driver board and manufactured cables to hook it up.


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 ?

[kevin_allein]

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 ?

[kevin_allein]

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 ?

[kevin_allein]

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 ?

[kevin_allein]

I changed the LCD panel configuration to 8 bit and now it works perfectly!