fazer 1000 speedo issues

I have a 2002 fazer 1000 with datatool system 3 alarm.

When starting the bike the other day the milage disappeared, the rev counter stopped working and the speedo is only reading half the speed it should.

The milage display shows for a split second when the ignition is turned on then disappears. It shows 'odo' and you can select 'trip 1' and 'trip 2' but no digits show up on any of the settings.

Has this happened to anyone before or does anyone know what the problem would be?

Please help

Thanks

Malcolm