by merkaren » Thu Dec 15, 2016 12:34 am
Restatement of Post with new topics and hopefully solutions
Thanks for the handy assessment to the subject. At this time the upload of a Image that would show the terminals is being prepared. Unfortunately the photo software is not functioning properly and getting the image to the computer difficult not only that but the images attempted are not technical quality. Not sure how long to effect upload of photo, maybe such is not necessary. The terminals are not in terrible condition, but then again a tech would have to look at them to make a determination and cleaning. I see where this person tried to add small copper wire mass to one or two terminals and apparently tried affixing such with epoxy. Never the less the HP41C did not come back to life and I was surprised. Actually just one of the terminals likely has consumptive damage, but then the other three need proper cleaning. Am not sure that the new board is necessary and or such looks different than the small exposure of copper board seen at the battery terminals. How can the HP41 be tested for accuracy after the repairs?
Should the HP41work with the repairs done by this person? Is the upload system working and what image - photo software is compatible? Are there any quality Engineering schools or two year or one year programs of engineering or surveying that use the HP 41 or other hand held calculator? What other hand held calculators are there for complex or detailed mathematical calculations?
Am trying to recall what and if the the actual user manual mentioned a period of time in which the batteries needed to be removed and stored for later use and was there a battery level monitor...... . I recall that some road curves were calculated years ago much to the disbelief of a Licensed Professional Engineer that thought this person was a nuisance rather than capable of doing the work and results.