I am a "first-time poster" but long-time hp calculator user and fan. I recently came across my old hp-34c and decided to try and revive it just for fun. I charged the batteries overnight and what do you know it works just fine! (I guess we're not too surprised by that, eh?) However, the ON/OFF switch has got problems. I have to play with it and slide it back and forth ever so slightly to find the one position where the calculator will function properly.
So my question is this: should I just be happy that it works and leave it well enough alone? Or, should I try to give the switch some attention? I have read through previous posts and found that a dielectric grease should be used to lubricate the contacts - but, I am very hesitant to take it all apart. In my experience corroded contacts in switches, sliders, pots, etc. will sometimes improve simply by getting some use.