1. Replace the Navboard 400x240 6.5" screen with an 800x480 Transflective screen
I found a supplier that sells this screen. To summarise:
- 6.5" 16:9 LCD
- 800x480 resolution
- 550 cd/m2
- 400:1 contrast ratio
- 15ms response time
- LED backlight
- VGA controller to complement
- constant current driver with dimming
I've also discovered that there are services that upgrade LCD's to transflective ones so I'll be using that.
Now to get the existing BMW system's RGsB video signal into this VGA controller. I was recommended this converter which should do the trick.
The final piece of the puzzle will be to have a VGA switcher, but that's a really easy bit
All looking on target so far, so time to start spending money!
Step 1: Buy the converter and see the BMW RGsB signal on a normal VGA monitor
Step 2: Buy the LCD and controller and test with the above to make sure
Step 3: Take the BoardMonitor to surgery to swap the screens and squeeze in the controller circuitry. Ensure existing BMW operates normally
Step 4: Upgrade the LCD to transflective
Step 5: Enjoy a high-res Transflective 6.5" upgrade for the BMW BoardMonitor