Dead instrument backlight

I have a problem with my instrument cluster baclight,it is not lighting up. I have checked fuse and it is not blown,the instruments are functioning as per normal.My headlightswitch is working,I can switch on the parklights and headlights but am unable to switch on my fog lights and the rear fog lights,the headlight level adjustment and the dimmer is also not functioning.
The car is an Astra G 2004 model.
Do you guys think it could be the headlight switch module that is faulty,anyone have a...

Dead instrument backlight