HP Forum Archive 15

[ Return to Index | Top of Index ]

HP-41 Cold Shock Message #1 Posted by Geir Isene on 7 Mar 2006, 2:50 p.m. Could the HP-41 get problems during cold weather? Maybe that was a reason why one of my CXs died the other day. Another one apparently died today but I managed to revive it with only minor strange behaviour (a few previously unassigned keys were suddenly assigned some XROM functions in the 07 series). Is it a sudden spell of cold shock? Is this possible? Background info: I am living in Norway. It is early March. It's damn cold outside. A fireplace and a hot chocolate is the way to go.

Re: HP-41 Cold Shock Message #2 Posted by Garth Wilson on 7 Mar 2006, 3:35 p.m., in response to message #1 by Geir Isene My 41cx manual says the minimum operation and storage temperature is 0 deg C. Then it goes on to say that if the batteries are removed, or if clock accuracy is not a concern, then the storage temperature can go down to -20 deg C. I can't think of anything in there that should experience any damage until you get down at least to -20, and then maybe you could damage the LCD. I did test a wide-temperature-range LCD here for my work a few years ago, and although they said anything below -40 could damage it (from freezing the liquid), I took it down to -55, even while operating. Although it was not readable down there, it was fine when brought back up to normal temperature.

[ Return to Index | Top of Index ]

Go back to the main exhibit hall