Question about Texas Instruments TI-84 Plus Calculator
If you're adventurous:
note the location of the non-working keys
take the batteries out
unscrew all screws from the back of the calculator
pull top and bottom halves apart (do this carefully so you don't break something) and hold calculator so keys and screen are down.
check for corrosion under non-working keys, it'll be a different color of metal on circuit board under keys
if you find corrosion use steel wool or some other mildly abrasive device to gently remove
Posted on Mar 13, 2011
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Posted on Jan 02, 2017
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