Not powering up reComputer J30

I have a reComputer J30 series but this doesn’t power up (fan not turning/no light) when plugging in a power adapter which is a direct current 12V (5 Ampere). The input for power also mentions ‘dcin’ which i can only interpret as direct current in. The data sheet of this device mentions the power supply to be between 9-19V.

What could i try to make this device start up again?

Have you ensured that Jetpack is flashed inside your device?

Ensure that the power adapter you are using is functioning properly. You can test it by using a multimeter to measure the voltage output. If the voltage is within the specified range (9-19V) and there are no other issues, the power adapter should be working correctly.