Mostly Non-Destructive HP-48 Series Keyboard Fix

[gwh]

(01-29-2023 05:37 PM)EugeneNine Wrote:  Well, this is an old thread, I've learned a lot since then. Get a bottle of isopropyl alcohol and cotton balls. take out the batteries and remove the doors of the calculator. Soak some cotton balls int eh pa and squeeze them out on the keyboard overlay. Let sit for a few hours and apply more if needed. The ipa will dissolve the glue and the thin metal overlay will just come right off without bending. If a part of it doesn't want to come off then stop and dribble some more ipa in. Once the overlay is off you can get to the rivets that hold the top and bottom together easily.

There's a much better, non-destructive way of opening it: https://www.hpcalc.org/details/4701 and https://www.hpcalc.org/details/3417

I've opened 2 SX and a GX like this and while I haven't yet fixed them yet (faulty keyboard and/or screen connections), I'm pretty sure I can close them and no one would be able to tell they've been opened.