Hi bribrius and to you all. bribius - you may well not need a Nikon Forum but what about consideration for others and especially the newer members - that the forum has a better chance of retaining if there is one as a part of the main forum.
Just because a camera comes with a manual when new does not mean that the it is available when being sold as a Pre-owned item.
Again,just because a member has a Canon or any other camera for that matter - does not mean that they know everything. I have had Canon in the past,indeed a Canon FTb with a 1.4 and I certainly did not know everything.
As for leaving "The Pentax People" out of this, ( Why ? ) they have had their share of camera issues and worked through them or trashed them or even stuck them on E'bay and found an unsuspecting mug to off-load it onto.
Having recently purchased an MZ-7 with a Pentax 28-80 that was otherwise clean,tidy and no visible damage - I suffer Mirror Lock-up and or a software issue during a test roll of film.
I later find out that Pentax had cheapened the products by using Plastic components instead of the brass that was so tried,trusted and dependable and relatively easy replaceable. Oh by the way it also allegedly was done to make the cameras lighter - by a few grams !!!!!!!!!!!!!!!!!!
When they fail prematurely the poor unsuspecting punters then have two choices - pay silly money to repair it,if you can find a repairer that can source or has the parts - or BIN IT.