No HDMI Signal - is my board dead?

[mzs]

There is a different SD card image (not Debian) which should boot (I grabbed this post and auto translated anything that was not already in English):

@Michael.Zhu

Because there was a ddr and eth0 bug before, you need to update uboot and spl with the new debian image-69;
if you have failed to flash uboot, there is actually a version besides the repaired chapters in the manual, as follows:

1. flash sdcard.img into tf card;
2. power on and login system(user/password: root/starfive);
3. transfer the latest uboot/spl files into board by USB or Ethernet;
4. flashcp command to update;
5. re-insert the debian tf card and reboot;

There is also a picture of the boot switch positions here.