https://boards.rossmanngroup.com/threads/a1502-820-3476-a-no-light-on-charger-u7900-power-cycling.24157/
A1502 820-3476-A no light on charger, U7900 power cycling | Rossmanngroup Forums
Working on this board that according to client died after he dropped the computer. Already swapped U7090 but no dice. Board has no signs of water damage...