Reply to Some buttons are not lighting up

Some of the buttons on my unit are not lighting up when pressed. Both Key, Loop and Cue buttons, as well as the Performance Juggle button will not light up when any performance know is turned to the right.

From the instruction video I noticed that the middle deck button and the 4 effects buttons (mix/frz and speed) do not light up.

The Cue 1 to 4 buttons for each jog do light up of which only the Drop and Play button turn from white to blue colour when pressed down.
The Scratch/Juggle buttons are lit up white and only go off when pressed. The Snap button switches white/blue when pressed. The Deck C button is always lit up white.

Am I overlooking something or is this be a faulty unit? :eek:

Tested in both 1.2 and 1.3 mode, in 1.2 the only difference is that the Snap button does not turn blue when pressed.