To resolve issue with no signal some logs are required from ssh console
If ssh not enabled yet it must be enabled with uEnv.txt file on first partition.
It is visible on Windows or mounted on Linux.
Current line
Code
mmcargs=setenv bootargs 'boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 quiet video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 dmfc=3 consoleblank=0'
add ssh to it
Code
mmcargs=setenv bootargs 'ssh boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 quiet video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 dmfc=3 consoleblank=0'
After reboot ssh should work.