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This simple method lets you make LCD backlight of any color and size to bring new look to an old device.
For this job you'll need piece of transparent plastic, LEDs, resistors and some wire plus good set of different tools and couple of straight hands ;-)...
LCD consists of PCB, metal frame and liquid crystal glass assembly.
Back side of LCD glass is covered with very thin reflective film, which should be removed.
My mistake was that I've removed polarizing filter together with reflective film.If it happened just use sharp tool to separate them and save filter ...
Next cut rectangle piece of plastic. Sand face and back sides of plastic plate with fine sandpaper to diffuse light then cut notches on sides of plate...
Something like that. You can use hot glue to secure it on place.
Not bad for me ;-)
Now everything is ready to be assembled: -PCB; -white sheet of paper to reflect light back; -polarizing filter (if you removed it by mistake); -plasti...
I hope you already calculated value of resistors you need. So, solder it up. There are two points to get power to LED from. You can connect it directl...
I've used similar technique to modify antique analogue meter for my next project.
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