HP 15C - Keyboard Quality

[johnb]

Definitely not common to all HP-15c's.
Mine was built in the US in 1987 and has that distinctively clicky HP feel.

I've never seen a Brazillian-built model, so we'll have to wait for feedback from someone who has one.

My HP-11c has a somewhat mushy Enter key, but I attribute that to wear in the dome underneath, because it is by far the most-used key.

I have seen a couple of Pioneer series that went "mush" instead of "click", and both were the result of goop in the keyboard. One had an entire can of Cola spilled in it and then had been left to sit until it dried! I bought that one VERY cheap (as "non-working") and revived it by removing the batteries and cycling it back and forth between an ultrasonic bath in distilled water and a warm oven at 150°F. A full Saturday of that (with LOTS of gentle tapping in between) and it clicked like almost-new!

Lots of folks here have MUCH more experience than I do in reviving old HPs and may be able to advise you further.