These may help:
http://www.3dlabellingsystems.com/pages/micra_faulty_boot_switch.html
http://www.theanswerbank.co.uk/How-it-Works/Question1131420.html (Look for the long post by "Needawin")
http://www.howtomendit.com/answers.php?id=165600
Surprised you missed these when you searched fo ryourself, January 2017