https://de.ifixit.com/Antworten/Ansehen/403589/Buttons+on+48GX+don't+work
Buttons on 48GX don't work - Hewlett Packard 48GX - iFixit
Buttons 0, 1, 4 and 7 don't work anymore. I reset and replaced batteries and it still doesn't work. Any idea? - Hewlett Packard 48GX
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https://de.ifixit.com/Antworten/Ansehen/28339/Are+there+any+repair+kits+available+my+keyboard+doesn't+work
BEANTWORTET: Are there any repair kits available? my keyboard doesn't work - Hewlett Packard 48GX -...
Here is a link to a series of doc files from HP on your calc. Hope it helps. Ralph http://www.hpcalc.org/hp48/docs/misc/ - Hewlett Packard 48GX
https://de.ifixit.com/Antworten/Device/Hewlett_Packard_48GX/Unanswered
Hewlett Packard 48GX Reparatur Forum - iFixit
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