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Calc recommendation - self-study college math refresh
08-23-2024, 03:47 AM
Post: #14
RE: Calc recommendation - self-study college math refresh
Last night I found an old 17Bii in the drawer. Perfect way to test drive a basic 42s for a few days.

It is in good nick. However...the algebraic expressions and back arrow are not cooperating (unless gently pressing the right side of the screen bezel.)

Since this calculator has no real value, I don't mind ripping it apart to clean and installing some foam following the videos below. But first, I will try stuffing rubber into the battery compartment:

HEPATCA commented in YouTube, "Here's a simple fix to try without opening the calculator up. Remove the battery cover. Take a small rubber grommet, about 3-4mm thick, and insert it into the space between the case and PCB. it should be snug. Then with a small screwdriver gently push the grommet further in about 1cm, be careful to avoid the processor IC. When in place this grommet applies a bit of pressure between the back of the case and the processor PCB, which in turn pushes the processor PCB into the keyboard flex cable contacts. Half the keys on my 32SII were intermittent -- this simple fix brought it back to life."

Logan West repair
https://www.youtube.com/watch?v=Uo4EZG0NQbc

Jaron Ball repair
https://www.youtube.com/watch?v=2yoqtIJlkNM
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RE: Calc recommendation - self-study college math refresh - HPing - 08-23-2024 03:47 AM



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