HP Forum Archive 18

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Broken HP-25 Message #1 Posted by Simon Williams on 15 Mar 2008, 1:58 p.m. Does anyone have any ideas on this: I've bought a an HP-25 which seemed OK apart from a few iffy keys. However, programming doesn't seem to work, neither do registers or stats. Is this a memory problem? When programming, all steps appear to show GTO 00. Calculating mean in stats shows an error? Many thanks Simon

Re: Broken HP-25 Message #2 Posted by Eric Smith on 15 Mar 2008, 4:00 p.m., in response to message #1 by Simon Williams Yes, those are the typical symptoms of the RAM chip(s) completely failing. :-(

Re: Broken HP-25 Message #3 Posted by Simon Williams on 15 Mar 2008, 5:24 p.m., in response to message #2 by Eric Smith Thanks. Worth repairing or just use it for spares?

Re: Broken HP-25 Message #4 Posted by Eric Smith on 15 Mar 2008, 5:35 p.m., in response to message #3 by Simon Williams The only source of the RAM chips is from another HP calculator, so I'd say keep it for spares.

Re: Broken HP-25 Message #5 Posted by Bruce Bergman on 15 Mar 2008, 10:43 p.m., in response to message #1 by Simon Williams Simon, contact me offline if you are in need of HP-25 parts. thanks, bruce (bruceb at fatcity dot com)

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