With a safrane, it's more likely to be several different problems if i'm honest.
Have you tinkered with any of the connections in the engine bay? - One of the two under the gearbox is a bit prone to knocking out the milometer / gear display... but no idea about the radio if i'm honest - i *think* that still worked when i had this problem but i can't be 100% sure as i was busy panicking about the damned thing not starting. I think it also knocked out the fuel pump... but again i can't be sure.
Word of caution though, the two connectors under the gearbox can be a bit of a pain so be nice and gentle with them.. they don't come apart easily and being french plastic...