Hi there:
I have a 48sx, and noticed today that the 5 right-most keys on the 3rd row from top (i.e. STO, EVAL, LEFT ARROW, DOWN ARROW, and RIGHT ARROW) are not working. The ' key beside them does work however. And when I shake the calculator, voila, they work. It appears there may be a loose contact. I also noticed with the card removed from the expansion slot, the problem goes away.
Any ideas? Any thought on what may be wrong, and if it is fixable?
Thanks in advance!