power on Pinebook Pro mainboard without keyboard?

[papable]

Recently the keyboard produced strange sequence of characters so I had to use an externel usb keyboard. I also noticed pb pro only started after I tried to press the power button several times. After a while, my pinebook pro can't start any more - I suspect because the keyboard died and the power button is on the keyboard. I took out  the mainboard to see if I can use it in a project (and use the display panel as a monitor for another computer), but I haven't figured out how to start it. I tried the "Reset" button but it doesn't seem to power on the mainboard. I also tried to press and hold that reset button, and did the same to the other button next to it. Nothing happened.

Is it possible to power on the mainboard without keyboard?