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submitted 6 months ago by over_clox@lemmy.world to c/calculators@midwest.social

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A gift from my Calculus teacher upon graduation.

Yes manual included. Sadly the 0 (zero) button no longer works, due to battery corrosion... ☹️

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[–] Denalduh@lemmy.world 4 points 6 months ago (2 children)

Open that bad boy up and grab some vinegar and a qtip. It'll remove the corrosion!

[–] over_clox@lemmy.world 5 points 6 months ago (1 children)

Already been there and basically done that actually, but with rubbing alcohol and a pencil eraser.

If vinegar is used (yes I've done that before as well), then it needs to be followed by a baking soda/water solution to neutralize the acid.

I believe the remaining problem is a corroded via, which connects the layers of the board together.

It's only a 2 layer board, so I might get it fully fixed one of these days. Totally within my skill set, just not high on my priority list..

[–] NewNewAccount@lemmy.world 7 points 6 months ago (1 children)

Humanity went centuries without 0s, you’ll probably be fine!

[–] over_clox@lemmy.world 3 points 6 months ago

LMFAO!

[–] over_clox@lemmy.world 1 points 6 months ago

I actually did two videos on my two rounds of trying to restore this thing...

More to come, maybe, someday...