Why won't my screen on my kindle keyboard go blank?
I've tried everything. I've held the power for 20 seconds, I recharged it, but it still won't work. Please help me!
What do you mean blank? The Kindle is designed to be in screen saver/power saving mode when not in use. Meaning the screen should be always showing something even when you're not using it.
The most you can do is a soft and/or hard reboot.