I have two HP 32SII calculators that I bought two years ago. They are in mint condition, hardly used, but both of the calculators backspace key makes an audible "clicking" or "snapping" sound when coming back to the up position after being pressed. None of the others keys make this noise. The key feels exactly the same as the others, that is it has good travel.
Two questions. First, does anyone know what is causing the clicking sound? And will this affect its value?
Thanks.