Smeg oven clock/timer broken

The analog clock/timer//function changer on my Smeg SFP805AO has stopped working which also means that I can’t change functions and start the pyrolytic cleaning.

When I unplug the oven and plug it back in there should be a light indicating that the watch needs to be set but that doesn’t light up either, so it seems to be completely dead. The watch itself doesn’t move either and nothing happens when I push the button to switch functions. The two controls to change temperature and heating function works and the oven heats up so it only seem to be the clock that is broken.

Whitegoods told me that it might be the watch that needs to be replaced but that is has to be programmed by a Smeg technician so they don’t sell it as a spare part, so I really want to be able to fix this myself since a repair seem to be so expensive that it isn’t worth it. Any help is greatly appreciated.

Attached is a layout of the oven and a picture of the clock as a spare part.