HP Forum Archive 16

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My hp 41cv calculator was unstable Message #1 Posted by Chiu Yiu Wai on 9 May 2006, 11:55 a.m. My hp41cv has been fixed the before , after that it worked properly , today I used it and does not turn off it , a few minutes later , it turn off automatically , and then the calculator stay in unstable status , sometime it can't detect the module , sometime it hang on , sometime can't turn on or turn off , I sure that it have not drop on floor or any liquid drop on it. I install a new set battery , it still unstable. Do anyone can tell me why and how to fix it.

Re: My hp 41cv calculator was unstable Message #2 Posted by Karl Schneider on 10 May 2006, 12:24 a.m., in response to message #1 by Chiu Yiu Wai Hello, CYW -- Well, the basic steps are to try the "master clear" -- turning it on while holding down the backarrow key (<-) -- and if that fails, jumper together the battery terminals with battery out in order to discharge the internal capacitor. All of this is in the manual. Is it a fullnut (rectangular display, made during or before 1985) or a halfnut (rounded-corner "masked" display, made during 1985 or later)? The fullnuts are more repairable. -- KS

Re: My hp 41cv calculator was unstable Message #3 Posted by Chiu Yiu Wai on 10 May 2006, 8:43 a.m., in response to message #2 by Karl Schneider Thanks for your tips It is fullnut version

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