Hi there,
1. Which image do you burn to SD card? We suggest respeaker-debian-9-lxqt-sd-20180801-4gb.img.xz
https://v2.fangcloud.com/share/7395fd138a1cab496fd4792fe5?folder_id=188000311814&lang=en
2. Please plug the HDMI cable and then plug the usb cable to power the board. Please check if there is any display signals.
2. Please plug the HDMI cable and then plug the usb cable to power the board. Please check if there is any display signals.
3. If you have the usb to ttl adapter, you can connect to the #5 connector. Then you plug the adapter to PC, you use the serial com port monitor to check the output. please post the error message to us. thanks.
Thanks
best rgds
Bill