I have just received a nice HP-25C. But there are a few confusing things that make me wonder if
1) there is something wrong with the 25C or
2) I don't know what I'm doing (most likely)
First, the basic operations seem fine. The storage registers seem to work ok. The values are saved between sessions. The batteries are fine.
But for some reason the programs act wierd. The don't seem to be saved between power on-off-on. I'm not sure if it has something to do with the way I write the programs.
Sometimes, after an off-on, the program is there, sometimes it's not, sometimes it gets corrupted. Wierd! Also, sometimes when the program gets trashed, the registers do also.
Everything seems to power up ok.
Anyone ever seen this or know what might be wrong. All I can think of is that maybe the power-up circuit is bad and it may corrupt data. Anyone?