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From: gt0297a@prism.gatech.EDU (Tim Drury)
Newsgroups: comp.sys.handhelds
Subject: Re: dead hp 28s
Summary: design flaw
Message-ID: <14897@hydra.gatech.EDU>
Date: 10 Oct 90 12:46:02 GMT
References: <245ceta@yoda.byu.edu>
Organization: Georgia Institute of Technology
Lines: 26

In article <245ceta@yoda.byu.edu>, ceta@yoda.byu.edu writes:
> I have loved this calculator for about 2 years then it finally needed some
> batteries....Since then I have had nothing but problems. Every now and then
> when I turn it on it will say memory lost...sometimes it is sometimes it isn't.
> 
> Well...what can I do? any suggestions?
> ******************************************************************************

My HP28s had the same problem - I posted an article about this a couple
weeks ago.  I called HP about a problem of constant memory failures and
occasionally the machine shutting itself off while I was using it.  The
customer rep said that for the earlier HP28s (and c i assume) the battery
compartment was designed for a specific size of the N type battery and 
since that design the battery manufacturers have changed their N type 
battery size by a fraction.  The batteries in your calculator have room
to move around a little causing bad contact.

HP told me to mail the calculator to their repair center listed in the
back of the manual and it would be fixed free of charge.  Its been a
week now and I'm anxiously waiting...

Hope this helps,

tim drury   gt0297a@hydra.gatech.edu