Resurrected 2 HP 48

[gwh]

I have to toot my own horn somewhere to cheer me up and it'll be here.

I am quite happy to have successfully brought back to life 2 HP 48 from my graveyard, yesterday a 48GX that had a faulty keyboard when I bought it.

I carefully opened it some months ago and procrastinated ever since. Then last evening I had nothing left to buy before I had to actually do it so I did it.

Process:
- opened it (using this method: https://www.hpcalc.org/details/4701 )
- cleaned connectors with alcohol (Isopropanol 99.9%)
- replaced screen with the black one from a cannibalized 40g
- put silver connective paint on the keyboard connectors on the motherboard (with a fine paintbrush)
- replaced keyboard contact foam with a double layer of double face 1.5mm thick adhesive foam

And to my own surprise it worked (almost) perfectly! ("Almost" because I can't seem to close back the top of the case. I haven't tried to slot in a card but otherwise it's fine)

So I just did it again with a 48SX this time, not replacing the screen, just fixing the keyboard. Another success!

I have renewed hope for the 1 48GX, 2 48SX, and 2 48G left to go (but 1 48G is a bit beyond hope.)