Not booting , Black screen backlight is on

[rocket2nfinity]

Same here. Pinephone UBports Edition.
I had problems with booting from the SD from start "of out of the" box.
I succeeded once with Postmarket OS. Made no changes to EMMC. Only booting from SD.
After I tried to SD boot  with UBPorts an older version II can't boot at all.
No Jumpdrive , no factory image works from the SD.
Tried different SD cards. Power should be ok.
After the Pine Logo the screen is dark no read activity from the LED.

Woops....

Now what?

/Maba

Sounds like partition tables got corrupted. Run gparted on your SD cards and then re-install ubports on one, or the jump drive image. Insert, boot into recovery and see if it succesfully can.  If so, then run gparted on your emmc because it also is likely corrupted. Mine were. I reflashed after gparted and all works now. Running  ubports on emmc and pureOS on sdcard