Seiko Oxford Crossword Solver With A Bad Display - Can I fix it?

‪@CookieTheHaydens‬ sent me this Seiko ER3500 Oxford Crossword Solver that had a bad screen display. The display was missing lines and characters all over it. Lets see if I can fix it.
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[@bobsoft]

I was thinking push "p" for carpals. Learned about those bones and many more when taking first aid training for work.
What do you use for button repairs, to bring back the conductivity?

[@RetroElectronicRepair]

Thank you, I realise now that carpals are bones. My wife used to be a radiographer lol. Usually for button repairs a quick clean will get them working again with IPA or water but if it's completely gone I would cut another button up and glue it on or glue on a small piece of tin foil. Thanks for watching and for the comment. 👍