48g over-zealous cleaning

[robjordan]

A word of advice. Take care cleaning your HP 48 with isopropyl alcohol.

I found not one, but two 48Gs at the back of a drawer in my parents' house. I'd already acquired a bunch of my late dad's collection as I've written elsewhere. One of them is from 1996 and pristine, another was from 1993 and quite dirty. I gave it a good clean with IPA and it came up looking very nice... except for the letters A to F, which had disappeared. Evidently much less firmly printed than the legends on the main keyboard below.

Shame. :-(

Rob