I have a P27-DH calculator using the power adapter (not battery) that I have been using for years. It has started returning jibberhish on the print function. Using just basic add/subtract calculation it will return various symbols, ie. %, ÷, =, sub-total symbol. These print out with random numbers. The display window will provide the correct answer, but I want a printout also. I have tried the usual measures; turning on/off, clearing all the memory keys, changing the decimel position, changing the rounding function. Nothing seems to work. Any ideas what is going on? Appreciate the help.
