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Led current voltage characteristic variations cause brightness difference. There doesnt seem to be any signs of corrosion or liquid debris apart from between the digitiser and the lcd all cleaned up now powers up and charges but the backlight is kaput. As shown in figure 3, the backlight driving circuit consists of three power converters. Schematicpro, schematic drawing software custom design electrical schematics, exstensive parts library, import export schematics, save in many formats including graphic files. Its browserbased so you dont have to download anything. Schematic diagram circuit of phone nokia 3110c rm237. C backlight inverter led driver no video with standby light on. Nokia 3110 light problem solution with jumpers keypad. Ccfl backlight installation guide for laptop screen replacing the ccfl backlight lamp on lcd screen is a lot more difficult then replacing an inverter.
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