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HP21 problem
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12-18-2014, 04:09 PM
(This post was last modified: 12-18-2014 04:56 PM by MarkPalmer.)
Post: #5
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RE: HP21 problem
I'm sure most here already know this, but I see so many for sale with them being shown tested with all sorts of gibberish shown on the displays stating the calculator is non-functioning and it drives me crazy. Never operate a Woodstock series HP calculator being powered off the charger without a good set of rechargeable batteries installed in the calculator. Bad or no batteries at all while powered on with the charger can easily damage the IC's in this series of calculators.
-Mark- |
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| Messages In This Thread |
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HP21 problem - vk6ti - 12-17-2014, 05:26 AM
RE: HP21 problem - Katie Wasserman - 12-17-2014, 02:57 PM
RE: HP21 problem - PANAMATIK - 12-18-2014, 08:28 AM
RE: HP21 problem - MarkPalmer - 12-18-2014, 11:56 AM
RE: HP21 problem - PANAMATIK - 12-19-2014, 04:19 PM
RE: HP21 problem - MarkPalmer - 12-18-2014 04:09 PM
RE: HP21 problem - aj04062 - 12-18-2014, 04:24 PM
RE: HP21 problem - PANAMATIK - 12-18-2014, 05:55 PM
RE: HP21 problem - vk6ti - 12-19-2014, 12:07 AM
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