Via Venezia Wiring
would anyone have a via venezia wiring diagram or know were to get one?
This wiring diagram may help you. Don't attempt any repairs unless you are confident enough in your skills to do so and as always at your own risk. Be sure to always unplug the machine if taking the cover off.
The Starbucks Barista was a USA model made for Starbucks by Saeco. I believe it was the same as the Saeco Via Venezia except 110V but can't guarantee that 100%. The diagram below is titled as Starbucks Barista 230V Model No. SIN006 (Saeco model No. also used for the Via Venezia).
Might be an idea to track the wiring as per the diagram and verify it matches your machine before assuming it to be correct.
Starbucks Barista Teardown - iFixit