Joe - thanks for the suggestions - I hadn't thought of Hanna tech support.
I also appreciate the notes on soldering those leads - although I would
agree it is a last resort.
I tried putting the probe into my Sodium Hydroxide solution last night - got
a reading of about 10.72
which atleast shows the instrument is not "stuck" but either the solution is
diluted (it was recently purchased but who knows how long it had been on the
shelf).

Your notes on cleaning the rosin reminds me I should go back to some
tweaking I did on my tube preamp a month ago and go over the solder
connections with a little cleaner! :^) - bottlehead forever!

Steve in Vancouver