Piaggio x9 250?

Hi All,
I have a 03 reg Piaggio 250. The Speedo/clocks dont work, this includes rev counter and temp and fuel gauge. On this model you have a digital display also seperate from the speedo etc which displays miles and temp outside and trip meter. This does not seem to work properly and the miles are reading 999999km When you ride the meter will work and turn over to 000000 and so on but when you turn engine off it resets to 999999KM. Its driving me bonkers. I have taken battery out and pressed the reset button many times, including holding it down but stil nothing. It use to work all ok. I think the weather we had over winter killed it. I have taken various bits apart and sprayed with WD40 to no avail....
Do I just cave in and buy a new display and speedo unit or is there something else I can do.

Cheers In Advance