I have a HP-31E that is dead and I am not sure where to start.
It is in the box with original case, manuals, and AC adapter.
Serial number is 1920A92944, Made in USA. It does not turn on when plugged in, and when I checked the battery pack I noticed that one contact is broken. The extra piece was under the batteries.
Where do I start with this?
I know this was a lower end model, but I would like to be careful and want to avoid any further damage.
Dead HP-31E, where do I start?
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01-17-2011, 04:00 PM
01-17-2011, 05:15 PM
first, do not plug it into that charger. never. if it is dead; that is probably what killed it. Edited: 17 Jan 2011, 5:19 p.m.
01-17-2011, 07:47 PM
Thank you, that did the trick and I now have a calculator that comes on and seems to work in general, but it has a new problem.
01-17-2011, 09:20 PM
I second that request :-) I have a 31E with some missing segments. The lower left segments are out for all digits on my 31E.
01-17-2011, 09:46 PM
it might be the pressed-on chip problem. maybe.
01-18-2011, 12:18 AM
Thanks db. My S/N is 1849A24700 Made in USA
01-18-2011, 04:05 AM
We had this topic recently: IIRC, you can't differentiate soldered/solderless by s/n but you can easily by weight. Please search the forum. HTH
01-18-2011, 07:11 AM
You lucky man - I swapped my HP31E for an HP32E (and quite a lot of cash) way back in 198x. Don't regret it but the HP31E is now definatly a collector's item... Mike T.
01-18-2011, 07:18 AM
I don't have a battery door and I'm at 171g weight. I think this means solderless and not good for me :-(
01-18-2011, 09:16 AM
i have two 31E's here, which i had planned to 'retro fit' with larger modern LED displays. should i be holding off on this plan? both seem to have small bubbles in the plastic lenses over the LEDs, along with some frosting. and both are well-worn, though at least one functions ok.
01-18-2011, 04:16 PM
That looks good. I also found a link with some pictures and a different method for separating the case. Not sure who made this page, but it may be helpful.
01-18-2011, 09:29 PM
I've used that method. It works fine too. I just wished i had longer fingernails and more fingers. I don't know who made that page either. Nicely done though. |
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