SIP speedo clock

The clock on my SIP speedo has stopped working and reading 00.00 all the time, any ideas what may be wrong with it.
The ability to post messages is restricted to LCGB members. Any questions contact us at lcgbadmin@googlemail.com
https://www.ilambretta.co.uk/forum/
https://www.ilambretta.co.uk/forum/viewtopic.php?f=10&t=12666