…has been really unreliable the past few weeks, frequently displaying “RST” when I do something benign like try to use the ÷ function. Not sure if a fresh battery would help it, haven’t tried. Hoping this a good omen, akin to the way the Bluesmobile self-destructs, but not a moment before it reaches the Richard J Daley Plaza.

Better now than on the day of the test… buy yourself a new one. You really should have two.

Try fresh batteries it is worth the couple of bucks to try it.