Re: HP-41 Module conflicts or what? Message #5 Posted by Vieira, Luiz C. (Brazil) on 21 Dec 2005, 11:17 p.m., in response to message #1 by Geir Isene
Hi, Geir;
I had seen some problems related to erratic behavior and, in extreme cases, calculator locked, mainly because of bad contact between the Battery/IO assembly and the keyboard PCB. In some cases, broken/cracked screw posts are the case, and solutions are diverse. Do you have the means to check if the both upper and lower halfcases are firmly together? Just slightly (SLIGHTLY) try to pull them appart, close to the LCD assembly. The simplest feeling of having them moving appart from each other is enough to certify if there is a case problem.
Also: please, don't be mad with me after reading my suggestion, because it is more likely that you'd have done this if you had the means to, but I can't help asking: do you have the means to perform a ROM checksum in these modules?
Hope this gives you some new clues... Let us know how it goes.
Success!
Luiz (Brazil)
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