DIS has just gone blank - ideas?

[optionclick]

I've just noticed that the DIS has stopped working during normal use.

The usual 'OK' message is displayed along the top of the display when starting the car (as well as fuel level icon when low), but nothing else.

The car has the original Concert stereo (which is working fine) and does not have SatNav.

Could this be a loose connection somewhere, or a blown fuse perhaps?
It was working perfectly last week. Any thoughts or suggestions as to where the problem might lie?

[Nige_RS4]

There is a button underneath the RHS control stalk - you've accidentaly switched it off!

[optionclick]

Sorted - thanks for the tip!