New EICAS screens
35. April 2020 by Peter
After installing a second CDU I had to unmount mt lower EICAS screen.
I could turn the screen 90 deg then it would fit between the CDUs. But my upper EICAS screen is too high (read: Sticks out underneath). So I am not able to turn the lower EICAS 90 degrees.
So I had to change my beloved 15″ upper EICAS-screen.
I had two 14,1 inch laptop screens laying around. The screens are model-numbered: LP141WP1 and can be found for as low as $20 on eBay. This is just the screen. You also need a controller board that converts the signals from your computer. I bought a M.NT68676.2A board. But just make a scearch for your screen model number abd “Board. So search for “LP141WP! Board“. The board costs around $25. So a total of less than $50 gives you the screens necessary for a EICAS And you need two.
I used to recommend 2x 19″ and 1×15″ monitors for the Main Instrument Panel. That has changed now to:
- 2x widescreen 23″. These covers PFD, ND And the clock.
- 2x 14,1″ laptop screens for the lower EICAS and upper EICAS + 2 Stand by instruments.
Build a Boeing 
Hey Peter. I have also purchased the same screen and controller board. However, I’m getting power to the board but the screen is very dark and I can only just make out what is on the screen. The brightness and contrast settings are at 100%. Could there be an issue with the board or screen? Maybe input voltage?
Hi Gareth.
This might sound strange. But what if you turn the screen? Sometimes it has to do with the viewing angle.
Otherwise I am out of ideas.
Cheers Peter
Hi Gareth,
You need to increase the backlight voltage to somewhat between 7-20V to achieve the optimum brightness. Please refer to your LCD board datasheet for the best voltage for your LCD backlight.
It can be done by cutting the backlight wires (red and white) on your LVDS cable and use that higher voltage I mentioned above directly to the LCD panel. If your controller board runs at 5V, you can use boost converter with input terminal connected to your board’s 5V input and output terminal to backlight wires heading to your LCD board.
But please before connecting the output terminal to your LCD board, you need to check the output voltage using multimeter and use negative screwdriver to adjust the boost converter’s output voltage match to the recommended backlight voltage on your LCD board datasheet.
Cheers,
Rahman