HP15CLE old can of worms

[lrdheat]

My 15C LE enters multiple 3's often when I intend to enter a 3. The fatal failure is that suddenly, the 6 key stopped working.

When the 15C LE worked, I liked how quickly integrations converged on a result compared to the 34S. I found myself wishing, however, that it could handle x-root-of y when encountering problems dealing with odd roots of a negative number.