CTE 5" TFT Black screen

After digging inside the library I succeeded to compile one of the example (UTFT_GHL demo fonts) but the screen remains black..Same for Demo 800x480.
I use the CTE shield for Arduino DUE.
Help appreciated

This should be more or less what you have ?

This thread might help you, reply #13:

I got a good support from Graham. The problem was in the TFT declaration (CPLD instead of CTE50) and the ARM/hardware/defines.
The TFT is working properly in term of display. I am front an other difficulty with the touch screen facility.
Best regards