I read here that an lcd backlight requires 4.2v and I was driving it with 5v, after putting in a 22k resistor it dropped it down to 4.2v but now the lcd backlight doesn't power up now, it does if I cannot 5v straight to it. I am not using a crystalfontz lcd but I didn't know where to ask, if anyone could help me that'd be great. It is a dv-16100 lcd with an led backlight.
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