Path: utzoo!mnetor!uunet!husc6!bbn!rochester!udel!princeton!phoenix!dcoster
From: dcoster@phoenix.Princeton.EDU (David Peter Coster)
Newsgroups: comp.sys.hp
Subject: Memory lost on HP28C
Message-ID: <1770@phoenix.Princeton.EDU>
Date: 19 Feb 88 16:49:15 GMT
Reply-To: dcoster@phoenix.Princeton.EDU (David Peter Coster)
Organization: Princeton University, NJ
Lines: 26
Keywords: HP28C

A while ago I posted the following message: 

      On three occasions I have had a message saying that the memory on
      my HP28C has been lost.  The first time it happened, I had a
      fairly long program to draw the Mandelbrot set in the memory.
      Since then I have been loathe to put in any long programs since
      they could disappear at any stage (or so it would seem).  Has this
      happened to anybody else?  How can I cure my calculator of this
      annoying habit?  (The batteries should still be good, and I have
      had no low battery annunciator).

I received no replies, but at the same time the calculator stopped
misbehaving.  In the last few days however, I have had the memory lost
message three times.  It is rather frustrating not knowing whether the
results of a calculation are going to be there when you next switch
the calculator on.  Does anybody have any suggestions?  Has this
happened to anybody else?

If it needs to be repaired, is there any way of upgrading it at the
same time (I don't intend fixing it myself as it is still under
warranty - at least I think so, I'll have to check).

David Coster

dcoster@phoenix.princeton.edu
dcoster%ppc.mfenet@anlvms.bitnet
dcoster%ppc.mfenet@nmfecc.arpa