Digital display thing on dial display on GTI

help

ive just got my hands on a 89 1.8 GTi and when i first drove it the little digital thing (im new to GTi spec my 1.1 didnt have one) was working i then stalled the car and it all went wrong the digital screen is not working now

any ideas on how i can sort this would be great

also any ideas on what it does and how it is controled would be cool

Its called an MFA - Multi function accessory and is controlled by a button and sliding switch on the end of the wiper stork and displays stuff like time, oil temp, outside temp, trip miles, avg speed. i dont know why it would just stop working but you could disconect the battery for a while  and see what happens when you put it back on??? or one of the connectors on the back of the dial cluster could be loose???

Pull the fuse or disconnect the battery - on reconnection the the MFA will reset itself.