Hi i'm planning to build the yampp7. After looking on the Homepage and studying the shematics, i've got a question:
Whats the reason for installing the transistor T2?
If i do not want to install the backlight theres no need to connect the atmega with J2, and if i want to install the backlight then i should remove T2 (in regard to Eric Guérard's Manual). So i can't see any reason for installing the transistor?
So if someone could explain to me why to install this trancistor it would be very kind.