Mileage counter not showing. Fiat punto mark 2. Please help?

[LauraCullen]

The digital display that shows the mileage has disappeared on my dashboard.
Any ideas why? And does anyone know how to get it back on.
thanks

 

[Timboishere]

These are often backlit by a small bulb that can blow. behind the dash, no idea how to get to it sorry.