This led to the infamous technical note where Apple recommended users facing problems with the Apple III to lift the computer two inches and then drop it, as this would set the circuits back in place.
I couldn't find that technical note in the Apple III Technotes page of apple3.org. Was this really a recommended procedure by Apple or is it just an urban legend?
The earliest reference to this procedure that I can find is page 33 of "The Mac Bathroom Reader" dated 1994:
As a solution, Apple actually recommended lifting the front of the computer six inches off the desktop, then letting go with the hopes that the chips would reseat themselves.
Other people around the Internet remember getting the technical advisory/bulletin and making copies of it, suggesting that it really exists. Can anyone locate the document to confirm?
 Torres, G. (2012, May 31). Inside the Apple III. Retrieved from https://web.archive.org/web/20150406155418/http://www.hardwaresecrets.com/article/Inside-the-Apple-III/1563
 Linzmayer, O. (1994). The Mac Bathroom Reader (ISBN: 0-7821-1531-4). Alameda, CA: SYBEX Inc. Retrieved from https://archive.org/details/mac_The_Mac_Bathroom_Reader_1994/page/n43
 "Apple issued a tech bulletin that in the case of a malfunctioning Apple III the first thing to do was to pick the unit up 6 inches AND DROP IT! ... I took to carrying a copy of the bulletin with me and showing it to the customer before I started dropping their system." https://www.overclockers.com/forums/showthread.php/669766-Tell-us-your-greatest-story-about-fixing-computers?s=4b3e638d88057292eaf1f7f57562e1f7&p=6790582&viewfull=1#post6790582
 "I worked at ComputerLand in the Silicon Valley at that time and I remember getting the technical advisory from Apple about this, and how the “approved” method of reseating the chips was to lift the system box about 6″ above a solid desk or table, and let it drop flat to the surface...we made copies of the official Apple notice and gave it to all our customers who brought the units in for service." https://www.technologizer.com/2009/06/14/fifteen-classic-pc-design-mistakes/#comment-14525