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HP Forum Archive 14

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hp-21 key malfunction
Message #1 Posted by Marc Pepin on 12 Apr 2005, 4:03 p.m.

The battery pack leaked in my hp-21.I've clean the calculator put new batteries in.The calculator works well when I test it outside the beige casing, but when I put all the thing together the blue, rcl and clx key don't work. (The battery pack fit real tight in the casing. It seems wider a bit because i've pry the old batteries out.) Hope someone has a clue on this. Thank you Marc Pépin

Re: hp-21 key malfunction
Message #2 Posted by Phil on 12 Apr 2005, 4:28 p.m.,
in response to message #1 by Marc Pepin

Hi Marc, try a cleaning with printed board solder flux cleaner like Electrolube "Flux Clean" or contact cleaner like Chemitronics "Pow-R-Wash" without warranty. Fortunatly, if it's ok afeter cleaning, protect the contacts with Electrolube "contact Grease" and remove all Nicad battery when calculator is not used Regards. Philippe

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