41CX locks up when eXEQuting any program

[Alex Souza]

Hi Ángel! Thanks in advance for your attention! Yes,i think so,i can assign any function to a key,execute the cat 3 and sst any program.I assigned "fact" to the "LN" key and executed the factorial of 69 that is the highest value the machine can calculate and the answer seems correct - 1,7112 E98.Until a couple of days ago i could run a program without any problem but from time to time the machine started to show that problem.Once it could run a program but it seemed it wouldn't have enough energy to get to its end,it stopped in the middle but could get to the end of the execution of the program.Now the machine refuses to execute any program but all other function are all right.