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HP48SX time capsule! - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: HP48SX time capsule! (/thread-66639.html) |
HP48SX time capsule! - Mike - 12-08-2004 I want to place my HP-48SX in a time capsule. I will need to remove the batteries and put it in a 'Pelican' case. Re: HP48SX time capsule! - Tim Wessman - 12-08-2004 I have two questions. 1. Are you going to bury any cards with it? 2. Where EXACTLY are you going to bury the thing??? ;-) TW
12345 Edited: 8 Dec 2004, 2:37 a.m.
Re: HP48SX time capsule! - Frank Boehm (Germany) - 12-08-2004 I would go for a dry and semi-cold environment; probably 10oC should be the best. If you are able to seal the capsule, put some silica gel pads into it. It is probably impossible to say, if it will survive or not. The LCD might fail, the FLASH-memory is even more likely to fail, plastics might degrade, contacts may corrode.
Judging from my collection, 20 years should be easy - think of all the 41Cs on ebay, those are around 20 years old and most of them work.
Re: HP48SX time capsule! - Ron Ross - 12-08-2004 I think everything will be fine except the compressive foam used to apply pressure to the LCD and keypad. If that doesn't exert enough force (and it softens with time, NO MATTER WHAT!) the contacts can form an oxide and/or the on contact for the on key and many other keys will fail to register. This is the number one failure aside from mechanical abuse ie broken LCD's for the 48 series. That is why a 48 works one day and fails to turn on the next.
Correct that ageing flaw and you will basically be able to extend the period to 40+ years (Capacitor lifetimes anyway).
Re: HP48SX time capsule! - Raymond Del Tondo - 12-08-2004 Fortunately the HP-48 doesn't have FLASH;-)
Don't forget to put a manual ! (NT) - Andrés C. Rodríguez (Argentina) - 12-08-2004
Re: HP48SX time capsule! - John Smitherman - 12-08-2004 Just think - in 20 years HP may have the 49G+ keyboard working properly ;-)
John
HP 9830A on a shelf for 20 years - menno - 12-10-2004 This calculator was on a shelf in a storehouse for 20 years.. And it works !
A collegue has taken the thing home now
Re: HP 9830A on a shelf for 20 years - Mike - 12-31-2004 Thank you thank you all! |