I have been working with a dev board with the LCD backlight circuit shown below. The boost converted used is the TPS61041. On page 18 of the datasheet, there is an example of the backlight circuit configuration.
I am trying to drive a NHD-4.3-480272EF-ASXN# 4.3" TFT. The TFT backlight requires 40-50 mA at ~25 volts. To make the circuit compatible, I have replaced R2 with a 27 ohm resistor for ~45 mA regulation. I have also removed DZ1 to prevent it from clipping the output at ~16 V. The TFT backlight still does not power on. I have checked all of the TFT connections and they are correct. I also have the EN pin set high. Where am I doing something wrong?