Do not use a power supply that exceeds either 5v or 2.5a Do not use a power supply designed specifically for another device such as a Nintendo Switch. Do not use a power supply capable of Fast Charging. If in doubt, contact me first
Connect a suitable USB-C Power supply to the Mainboard and ensure you see 3 solid battery level LEDs and 1 Flashing LED
If no LEDs illuminate on the rear of the mainboard, contact me.
With power applied, cycle the power switch.
These checks ensure both the power supply and charging circuit or working as expected. You may now solder the Raspberry Pi to the mainboard. Soldering the Raspberry Pi to the mainboard means no returns will be accepted and no refunds will be given