HP 28S is very loud when opening/closing
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01-29-2020, 10:22 PM
Post: #1
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HP 28S is very loud when opening/closing
I have just received an HP 28S that belonged to my uncle. It hasn't been used in sometime, and when I fold it open or closed it makes quite a squeaking noise. I am not afraid the calculator will break each time I open it, but it does seem like something I should address. The hinges are tight enough that when you open the calculator it will not simply lay flat on the table without more adjustment.
I am not sure if I will cause damage to the calculator if I add some oil around the hinges, or if that will stop the noise. I would greatly appreciate any suggestions or other tips about this calculator! Thanks, RK |
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