Dead Horse
It is all really interesting and all, with all the weird stuff of forward / backward / sideways / insideout voltage of LEDs. It has run its course. As far as the Paperwhite is concerned, setting the device to 0 is good enough. The LEDs do not emit any light and that is a desired thing when this thread is about turning the light OFF. At 0 it is off. End of story.
Stay tuned for a new (different) method to turn the light off. Give me some time to touch that up on my stupid phone.
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