I have the exact same configuration and the exact same experience.
1. flashing DietPi to the SD card - boots and Pinebook turns off after several seconds
2.
The screen remains black, the Power LED glows
3. I used the emmc - USB adapter fro the Pine shop, and flashed the image right to the emmc module. No boot, dark screen, Power LED glows
1. flashing DietPi to the SD card - boots and Pinebook turns off after several seconds
2.
Code:
wget https://dietpi.com/downloads/images/DietPi_Pinebook-ARMv8-Stretch-Desktop.7z
7z x *.7z
dd if=$(find DietPi*.img) of=/dev/mmcblk23. I used the emmc - USB adapter fro the Pine shop, and flashed the image right to the emmc module. No boot, dark screen, Power LED glows