4 
1 Top screen flashes white
Hello,
The botton screen of my nintendo DSi flashes, blue led on, and turn off and top screen keeps dark.
I already check all the ribbons and everything's ok.
The top screen works fine on anoter DSi.
The top ribbon is 100% correctly inserted in the mother board.
The DSi charge is OK, fuses are checked ...
What's wrong.
Many thanks for your help
