joselalf

Weyou, OPI PC2 is very stringent regarding power requirements. Failing the SD card replacement, You should try with the manufacturer recommended AC adaptor, 5V/3A, 4.0*1.7 barrel plug...I also tested other adaptors with my board, but none of them worked, until I ordered the recommended adaptor via Xulong Aliexpress page.

Weyou, It may be obvious, but are you using a barrel type power supply? Looks like you are using an OTG (USB type) power supply, since you Are talking about Samsung and Raspberry Pi chargers. I have an orange Pi pc 2 and I use the manufacturer recommended AC adapter 3A, barrel type.