Looking at a photo of the screen[1], it is a simple LCD dot matrix. I also read elsewhere that the problem is that the backlight tends to fade. So it seems like

Looking at a photo of the screen[1], it is a simple LCD dot matrix. I also read elsewhere that the problem is that the backlight tends to fade. So it seems like you have many options: * Find an equivalent LCD matrix. This is probably not that hard. This display seems like a generic part and LCD matrix displays haven't changed much over time. * Fix the backlight. That would mean taking the display apart and probably resoldering some LEDs, assuming that it's the LEDs and not, say, a capacitor that is causing the brightness to diminish. Going beyond these options, you'd be getting into decoding the commands to the LCD driver chip and displaying those somehow, which will be custom hardware development. [1] https://www.asari.jp/diary/archives/007355.html https://www.asari.jp/diary/archives/007355.html