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From: smbrush@lims05.lerc.nasa.gov (ANDREW BRUSH)
Newsgroups: comp.sys.handhelds
Subject: HP34-C repair
Message-ID: <1991Apr30.205354.1709@eagle.lerc.nasa.gov>
Date: 30 Apr 91 23:41:55 GMT
Sender: news@eagle.lerc.nasa.gov
Reply-To: smbrush@lims05.lerc.nasa.gov
Organization: NASA Lewis Research Center
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News-Software: VAX/VMS VNEWS 1.3-4

I have a HP34-C which the contacts in the battery compartment have broken 
off of, making it impossible to use the original 3-AA NiCd battery 
pack.  I'v been thinking about opening the case, and soldering on 
leads which could be connected to a 3-AAA alkaline battery pak, or 
whatever.  Here are my questions:

Has anyone done this before?

Does anyone know if the jump from 1.25V to 1.5V in cell voltage will 
hurt the calculator?

I have newer, smaller calculators, so I don't care about portabilty 
for the 34 too much... I just want to leave it plugged in to the 
adapter at my desk.  Does anyone have ideas for some circuit which 
will allow me to do this without batteries (I already know that it 
won't work on the adapter as-is).

Thanks in advance for your help.

Andrew S. Brush             | SMBRUSH@EARTH.lerc.nasa.gov
Sverdrup Technology         | 2001 Aerospace Parkway
NASA LeRC Group             | Brook Park, OH 44142
"Opinions are Mine, Only"   | (216) 826-6770