Strange HP 25 Problem (Repair) Message #1 Posted by Onur Ilkorur on 6 Dec 2013, 3:10 p.m.
Hi,
I have received this very clean HP 25, knowing that there is a fault in programming mode. I thought to myself, if the calculator works that far, the rest can be easy to solve. Maybe it is not even a problem but a newbie operator mistake.
However, to my surprise the problem occurred exactly the as the seller described. So, I am here ...
The calculator functions perfectly. When you switch to programming mode, you can not type your code properly and the calculator does not run the program. It gets stuck at the first instruction. Every key you press in the programming mode is displayed as 13 00 except some keys like f or g. Even if you type f SIN it is displayed first 14 for pressing "f" then when you press "4" for "SIN" the display shows 13 00. This happens for all other keys, like when you press "9" the "13 00" is displayed.
Any ideas where this problem is originating from?
Thanks in advance,
Onur
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