I have similar misgivings, Gordon, but wonder whether Forum Members could make better use of the Resources Section, by posting a 'XYZ Problem Fix on e,g, 2010 Ducato ...' This would help other Members to find solutions quicker, avoiding the need to troll through x pages of 'Have you tried the
fuse?' queries in the Main Thread, and could be in the form of a brief intro to the problem, than a step-by-step guide to the fix routine, including the Part Number for replacement bits, and warnings about quirks such not getting Part xxxx which is, say, for a LWB model etc.
The Fix Sheet could also have a 'Initial Checks' Section or similar e.g. Step 3 Check the
Fuse by removing it and testing with a Meter. Step 3 a If
Fuse OK, check for operation of Master Switch etc etc
The final version of the Fix Sheet would probably be a hybrid between the old Haynes Manual and a Garage MOT Checklist document that Members could download to phones, and would be useful for solving the 'Help! Stuck in a field in Oxford and No Heatiing but LPG refilled' problems
Steve