Hi ec2021 and blh64,
Sorry for that but I missed a pair of double quote (!) now my thread should be correctly readable!
In deed generaly the backlight is not under the ship display controler control. Regarding the size of the board, it is almost impossible to cut a track an insert a transistor to control the backlight.
May be the board designer in Spotspear did not think enough of ergonomy?
Nevertheless thanks to both of you trying to help me!
Regards