Re: HP 41C Message #4 Posted by Vieira, Luiz C. (Brazil) on 7 Nov 2001, 3:56 p.m., in response to message #3 by john smith
Hello;
I do not have my old HP41 (guts exposed) in hands now, but I believe a short circuit between two tracks of the keyboard could cause this abnormal operation. I´ll be home later today and I'm posting again, if needed (maybe Mr. Duel -UK- will read this post soon and answer with a better explanation OR a ready-to-use solution; I hope so).
I have removed the keyboard of three 41´s (fullnut) and one of them did not work properly: some keys caused no reaction. Battery leakage was the main cause.
In your particular case, the misplaced keys are in the same row of their "mask" keys. This suggests me that a short circuit is causing all this mass.
I´ll post something later.
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