Re: HP-45, strange key response Message #2 Posted by Vieira, Luiz C. (Brazil) on 16 Jan 2010, 10:02 a.m., in response to message #1 by Thomas Radtke
Hi, Thomas;
I have an HP15C with an opposed problem: two keys have no sound, no click at all, but they work pretty well.
You see, with the Spices, HP41 and Voyagers, the keyboard has a rubber sheet between the keys and the keyboard. In this HP15C, the two keys made a small hole in the rubber sheet right under them, mostly because the keys have just a small 'flat tip' that punctuate the metal cap (dome?).
The earlier series of calculators had a plastic sheet between the keys and keyboard, and I'd guess that in your case, the plastic is probably being briefly dragged over the metal contact (hence the hi-pitch noise, like a 'squeak',I guess) before the metal contact is actually pushed down.
Can you try to identify if this is what happens?
Cheers.
Luiz (Brazil)
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