Cleaning HP-45 switch contacts Message #1 Posted by Steve on 18 Sept 2002, 4:35 a.m.
I have been using my trusty HP-45 daily but I am having trouble with flakey contacts in the keyboard.
I disassembled the calculator and cleaned the switch contacts with an electronic non-lubricating cleaner, followed by a lubricating type. Unfortunately the contacts are impossible to get at, and this didn't seem to help much.
Does anyone have a method of cleaning these switches?
I did notice a little sticker inside saying that back in May of 1976, HP did this for me, but I think it needs it again!!
Thanks,
Steve
RPN'g since 1975
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