For people working in the electronics industry this is not such a bald move as it seems. Rule 1: don't drink too much coffee. Rule 2: work on a big table with lots of space to put all the nuts, bolts and parts in order. Rule 3: use good ESD protection. Rule 4: take your time.
An experienced worker can take apart AND put back in order such equipment without voiding the warranty. Even without showing that it has been taken apart (as long as there are no on-way seals on it).
I almost always take apart my equipment before warranty has expired. How can I learn to design better products myself if I don't have the opportunity to learn from the latest and greatest stuff from others?